{"id":1842,"date":"2022-12-01T19:55:26","date_gmt":"2022-12-01T11:55:26","guid":{"rendered":"https:\/\/ct.semitanker.com\/?page_id=1842"},"modified":"2026-08-15T19:50:20","modified_gmt":"2026-08-15T11:50:20","slug":"plastic-magnets","status":"publish","type":"page","link":"https:\/\/ct.semitanker.com\/es\/plastic-magnets\/","title":{"rendered":"Im\u00e1n con recubrimiento pl\u00e1stico"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"1842\" class=\"elementor elementor-1842\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d72d022 e-con e-atomic-element e-div-block-base e-d72d022-c32e340 \" data-id=\"d72d022\" data-element_type=\"e-div-block\" data-e-type=\"e-div-block\" data-interaction-id=\"d72d022\" data-e-type=\"e-div-block\" data-id=\"d72d022\">\n    \t\t<div class=\"elementor-element elementor-element-e9c3848 elementor-widget elementor-widget-html\" data-id=\"e9c3848\" data-element_type=\"widget\" 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table{min-width:720px!important}\r\n}\r\n<\/style>\r\n\r\n<section class=\"osenc-pdp\">\r\n\r\n  <section class=\"hero\">\r\n    <div class=\"wrap\">\r\n      <div class=\"hero-grid\">\r\n        <div>\r\n          <span class=\"eyebrow\">Custom Overmolding &amp; Plastic Encapsulation<\/span>\r\n          <h1>Plastic Coated Neodymium Magnets<\/h1>\r\n          <p class=\"lead\">OSENC manufactures custom plastic coated neodymium magnets with partial or full encapsulation, overmolded housings, mounting inserts and application-specific magnetization. We engineer the polymer wall, working gap and magnetic circuit together so the finished component meets both protection and magnetic performance requirements.<\/p>\r\n          <ul class=\"checks\">\r\n            <li>Partial &amp; Full Encapsulation<\/li>\r\n            <li>Insert Molding &amp; Overmolding<\/li>\r\n            <li>Custom Housings, Holes &amp; Inserts<\/li>\r\n            <li>MOQ 1 for Prototype Projects<\/li>\r\n          <\/ul>\r\n          <p><strong>Send the finished-part drawing. OSENC will review the NdFeB core, polymer structure, magnetization, working distance, mounting geometry and service environment as one engineered assembly.<\/strong><\/p>\r\n          <a class=\"btn\" href=\"https:\/\/ct.semitanker.com\/contact-us\/\">Send Your Drawing for Engineering Quote<\/a>\r\n        <\/div>\r\n        <figure>\r\n          <img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2026\/08\/osenc-custom-plastic-encapsulated-magnets.webp\" width=\"1200\" height=\"460\" alt=\"Illustrative plastic coated neodymium magnet configurations\" loading=\"eager\" fetchpriority=\"high\">\r\n        <\/figure>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"section\">\r\n    <div class=\"wrap\">\r\n      <h2>Custom Plastic Coated Magnet Capabilities<\/h2>\r\n      <p>OSENC supplies the magnet core and the polymer structure as a finished magnetic component. The released drawing controls the final dimensions, active magnetic face, mounting interfaces and inspection requirements.<\/p>\r\n      <div class=\"table-scroll\">\r\n        <table class=\"cap-table\">\r\n          <tbody>\r\n            <tr><td>Magnet Core<\/td><td>Sintered NdFeB<\/td><\/tr>\r\n            <tr><td>Shapes<\/td><td>Disc, block, ring and custom magnetic assemblies<\/td><\/tr>\r\n            <tr><td>Encapsulation<\/td><td>Partial encapsulation, full encapsulation and functional plastic housings<\/td><\/tr>\r\n            <tr><td>Manufacturing Routes<\/td><td>Insert molding, overmolding, CNC plastic housing, prototype tooling, single-cavity and multi-cavity production tooling<\/td><\/tr>\r\n            <tr><td>Polymer Options<\/td><td>ABS, PP, TPE, TPU, PU, PTFE, acrylic and nylon<\/td><\/tr>\r\n            <tr><td>Mounting Features<\/td><td>Through hole, countersunk, counterbore, brass insert, steel insert and threaded insert<\/td><\/tr>\r\n            <tr><td>Magnetization<\/td><td>Axial, diametrical, through-thickness, length, width and multipole magnetization<\/td><\/tr>\r\n            <tr><td>Prototype Quantity<\/td><td>MOQ 1 for custom magnet projects<\/td><\/tr>\r\n            <tr><td>Inspection<\/td><td>Finished dimensions, encapsulation condition, critical interfaces and magnetization; project-specific magnetic or mechanical validation when specified<\/td><\/tr>\r\n          <\/tbody>\r\n        <\/table>\r\n      <\/div>\r\n      <figure class=\"media\" style=\"margin-top:24px\">\r\n        <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2026\/08\/osenc-molded-magnet-design-options.webp\" width=\"1200\" height=\"460\" alt=\"Illustrative custom plastic coated magnet shapes and mounting features\" loading=\"lazy\">\r\n      <\/figure>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"section soft\">\r\n    <div class=\"wrap\">\r\n      <h2>What Are Plastic Coated Neodymium Magnets?<\/h2>\r\n      <div>\r\n        <p>Plastic coated neodymium magnets combine a <strong>solid sintered NdFeB core with a separate polymer shell, overmold or functional housing<\/strong>. Unlike plastic-bonded magnets, the magnetic core remains a dense permanent magnet rather than magnetic powder mixed into resin.<\/p>\r\n        <div class=\"callout\"><strong>Plastic coated is not plastic bonded.<\/strong> OSENC keeps the NdFeB core and the polymer structure as separate engineered elements so the finished component can be designed around protection, installation and magnetic output.<\/div>\r\n        <p>OSENC engineers these parts from the <strong>finished-part drawing<\/strong> because the polymer geometry directly controls final OD, length, hole position, active-face wall thickness, mounting features and magnetic working gap.<\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"section\">\r\n    <div class=\"wrap\">\r\n      <h2>Plastic Wall Thickness Is Part of the Magnetic Circuit<\/h2>\r\n      <p>OSENC treats the polymer wall on the active magnetic face as part of the magnetic design. Plastic is non-magnetic, so increasing the wall thickness increases the working distance between the NdFeB core and the target. That added gap can reduce usable field or pull force at the real operating position.<\/p>\r\n\r\n      <div class=\"grid-3\">\r\n        <div class=\"card\">\r\n          <h3>1. Lock the Magnet Core<\/h3>\r\n          <p>We define the core geometry, magnetic grade requirement and magnetization direction against the finished assembly.<\/p>\r\n        <\/div>\r\n        <div class=\"card\">\r\n          <h3>2. Control the Protective Wall<\/h3>\r\n          <p>We control active-face wall thickness separately from structural reinforcement, ribs, mounting bosses and other non-magnetic zones.<\/p>\r\n        <\/div>\r\n        <div class=\"card\">\r\n          <h3>3. Define the Test Interface<\/h3>\r\n          <p>We lock the target material, steel thickness, working gap and test condition when Gauss or pull-force acceptance is part of the drawing.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"callout\"><strong>OSENC engineering rule:<\/strong> we do not maximize plastic thickness by default. We balance the minimum protective wall required by the structure with the magnetic output required at the operating gap.<\/div>\r\n\r\n      <figure class=\"media\" style=\"margin-top:24px\">\r\n        <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2026\/08\/osenc-plastic-encapsulation-thickness-check.webp\" width=\"1200\" height=\"462\" alt=\"Illustrative measurement of plastic wall thickness on a magnet assembly\" loading=\"lazy\">\r\n      <\/figure>\r\n\r\n      <div class=\"mid-cta\">\r\n        <p><strong>Already have a drawing?<\/strong> Send it to OSENC for magnet grade, polymer structure and working-gap review before tooling or prototype release.<\/p>\r\n        <a class=\"btn\" href=\"https:\/\/ct.semitanker.com\/contact-us\/\">Send Drawing<\/a>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n\r\n  <section class=\"section soft\" id=\"working-gap-magnetic-test\">\r\n    <div class=\"wrap\">\r\n      <h2>Working-Gap Magnetic Performance Test for Plastic Coated Magnets<\/h2>\r\n      <p class=\"intro\">Plastic wall thickness changes the non-magnetic distance between the NdFeB core and the target. For projects where field strength, holding force or slide resistance is critical, OSENC can validate the finished plastic-coated magnet at five defined working gaps: <strong>0.0 mm, 0.5 mm, 1.0 mm, 1.5 mm and 2.0 mm<\/strong>.<\/p>\r\n\r\n      <div class=\"table-scroll\">\r\n        <table>\r\n          <thead>\r\n            <tr>\r\n              <th>Working Gap<\/th>\r\n              <th>Magnetic Measurements<\/th>\r\n              <th>Mechanical Measurements<\/th>\r\n            <\/tr>\r\n          <\/thead>\r\n          <tbody>\r\n            <tr><td><strong>0.0 mm<\/strong><\/td><td>Surface Gauss<br>Working-gap Gauss<\/td><td>Normal Pull Force<br>Shear \/ Slide Force<\/td><\/tr>\r\n            <tr><td><strong>0.5 mm<\/strong><\/td><td>Surface Gauss<br>Working-gap Gauss<\/td><td>Normal Pull Force<br>Shear \/ Slide Force<\/td><\/tr>\r\n            <tr><td><strong>1.0 mm<\/strong><\/td><td>Surface Gauss<br>Working-gap Gauss<\/td><td>Normal Pull Force<br>Shear \/ Slide Force<\/td><\/tr>\r\n            <tr><td><strong>1.5 mm<\/strong><\/td><td>Surface Gauss<br>Working-gap Gauss<\/td><td>Normal Pull Force<br>Shear \/ Slide Force<\/td><\/tr>\r\n            <tr><td><strong>2.0 mm<\/strong><\/td><td>Surface Gauss<br>Working-gap Gauss<\/td><td>Normal Pull Force<br>Shear \/ Slide Force<\/td><\/tr>\r\n          <\/tbody>\r\n        <\/table>\r\n      <\/div>\r\n\r\n      <div class=\"grid-2\" style=\"margin-top:24px\">\r\n        <div class=\"card\">\r\n          <h3>Magnetic Field Record<\/h3>\r\n          <p>OSENC records <strong>Surface Gauss<\/strong> and <strong>Working-gap Gauss<\/strong> at the agreed measurement position and orientation. This separates the field measured at the finished magnet surface from the field available at the real operating distance.<\/p>\r\n        <\/div>\r\n        <div class=\"card\">\r\n          <h3>Holding &amp; Sliding Force Record<\/h3>\r\n          <p>OSENC records <strong>Normal Pull Force<\/strong> and <strong>Shear \/ Slide Force<\/strong> when these values are part of the project acceptance criteria. The test interface is fixed before validation so the results are repeatable and comparable.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"callout\"><strong>Test-condition control:<\/strong> Gauss and force values are only meaningful when the test setup is fixed. OSENC defines the target material, steel thickness, surface condition, contact area, magnet orientation, working gap, pull direction and slide direction before test data is released. The five gap points above define the standard project test matrix; actual acceptance values remain product-specific.<\/div>\r\n\r\n      <div class=\"mid-cta\">\r\n        <p><strong>Need magnetic performance at a real assembly gap?<\/strong> Send the finished plastic wall, target steel, working distance and required force or field. OSENC can build the 0\u20132.0 mm gap matrix into the prototype validation plan.<\/p>\r\n        <a class=\"btn\" href=\"https:\/\/ct.semitanker.com\/contact-us\/\">Request Working-Gap Review<\/a>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"section soft\">\r\n    <div class=\"wrap\">\r\n      <h2>Partial Encapsulation, Full Encapsulation and Overmolded Assemblies<\/h2>\r\n      <div class=\"grid-2\">\r\n        <div class=\"card\">\r\n          <h3>Partial Plastic Encapsulation<\/h3>\r\n          <p>OSENC applies plastic only where the design requires protection, identification, spacing, gripping or a mechanical interface. The active magnetic face, mounting face or another functional area can remain exposed when the drawing requires direct magnetic contact or a defined interface.<\/p>\r\n          <p><strong>Insert molding is a manufacturing route, not a coverage percentage.<\/strong> OSENC defines the coverage boundary from the finished component drawing.<\/p>\r\n        <\/div>\r\n        <div class=\"card\">\r\n          <h3>Full Plastic Encapsulation<\/h3>\r\n          <p>OSENC encloses the NdFeB core more completely when the component requires stronger isolation from moisture, corrosion exposure, chipping or direct contact with surrounding equipment.<\/p>\r\n          <p>Before tooling release, we define the sealing boundary around seams, holes, inserts and other penetration points so the encapsulation structure matches the specified environmental and mechanical exposure.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n      <figure class=\"media\" style=\"margin-top:26px\">\r\n        <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2026\/08\/osenc-partial-full-encapsulation-comparison.webp\" width=\"1200\" height=\"462\" alt=\"Illustrative partial and full plastic encapsulation structures\" loading=\"lazy\">\r\n      <\/figure>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"section\">\r\n    <div class=\"wrap\">\r\n      <h2>Plastic Materials and BOM Control<\/h2>\r\n      <p>OSENC works with <strong>ABS, PP, TPE, TPU, PU, PTFE, acrylic and nylon<\/strong> for custom encapsulation projects. We do not treat these polymer families as interchangeable. The project BOM locks the actual material specification against the required environment, geometry and manufacturing route.<\/p>\r\n\r\n      <div class=\"table-scroll\">\r\n        <table>\r\n          <thead>\r\n            <tr><th>Polymer Option<\/th><th>Engineering Role<\/th><th>OSENC Locks Before Production<\/th><\/tr>\r\n          <\/thead>\r\n          <tbody>\r\n            <tr><td><strong>ABS<\/strong><\/td><td>Rigid housing, appearance, color and molded interfaces<\/td><td>Resin grade, temperature, UV exposure, chemicals and wall thickness<\/td><\/tr>\r\n            <tr><td><strong>PP<\/strong><\/td><td>Lightweight rigid parts and many wet or chemical-contact structures<\/td><td>Chemical, concentration, temperature, exposure duration and dimensions<\/td><\/tr>\r\n            <tr><td><strong>TPE \/ TPU \/ PU<\/strong><\/td><td>Soft contact, grip, cushioning and flexible overmolded surfaces<\/td><td>Hardness, abrasion, oil or chemical exposure, UV and temperature<\/td><\/tr>\r\n            <tr><td><strong>PTFE<\/strong><\/td><td>Low-friction and demanding chemical-contact requirements<\/td><td>Process route, wall thickness, working gap and full-assembly temperature<\/td><\/tr>\r\n            <tr><td><strong>Acrylic<\/strong><\/td><td>Rigid visual, colored or functional housing concepts<\/td><td>Impact, fastening, chemical exposure and geometry<\/td><\/tr>\r\n            <tr><td><strong>Nylon<\/strong><\/td><td>Tough structural features and wear-resistant molded parts<\/td><td>Moisture absorption, dimensional stability, temperature and chemicals<\/td><\/tr>\r\n          <\/tbody>\r\n        <\/table>\r\n      <\/div>\r\n\r\n      <div class=\"callout\"><strong>OSENC BOM control:<\/strong> Material, Manufacturer, Grade, Color, Hardness, Temperature Rating and Chemical Compatibility are locked in the project production file. We do not use a generic resin-family name as a substitute for the released material specification.<\/div>\r\n      <p class=\"small\"><strong>Process boundary:<\/strong> the available polymer families do not imply that every material is suitable for every molding route. OSENC releases the resin grade and manufacturing process together for each project.<\/p>\r\n\r\n      <div class=\"grid-2\" style=\"margin-top:28px\">\r\n        <figure class=\"media\">\r\n          <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2026\/08\/osenc-polymer-protected-magnet-finishes.webp\" width=\"1200\" height=\"460\" alt=\"Illustrative polymer protection options for neodymium magnets\" loading=\"lazy\">\r\n        <\/figure>\r\n        <div>\r\n          <h3>For Chemical-Contact Requirements<\/h3>\r\n          <p>OSENC selects the protection route against the exact chemical, concentration, temperature, exposure time and finished-component geometry. PTFE can be specified when its material properties match the application, while other projects may be better served by a thinner coating or another polymer housing.<\/p>\r\n          <p>Compare <a href=\"https:\/\/ct.semitanker.com\/teflon-coated-magnets\/\">PTFE coated magnets<\/a>, <a href=\"https:\/\/ct.semitanker.com\/epoxy-coating-for-magnets\/\">epoxy coated magnets<\/a>, and the <a href=\"https:\/\/ct.semitanker.com\/neodymium-magnet-coating\/\">neodymium magnet coating guide<\/a>.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"section soft\">\r\n    <div class=\"wrap\">\r\n      <h2>Plastic Encapsulation vs. Other Magnet Protection Options<\/h2>\r\n      <p>OSENC selects the protection route from the working environment, magnetic gap, mechanical interface and expected surface contact. A molded plastic housing is the right solution when the project needs more than a thin protective coating.<\/p>\r\n\r\n      <div class=\"table-scroll\">\r\n        <table>\r\n          <thead>\r\n            <tr><th>Protection Route<\/th><th>Best Fit<\/th><th>Main Design Trade-Off<\/th><\/tr>\r\n          <\/thead>\r\n          <tbody>\r\n            <tr><td><strong>Rigid plastic encapsulation<\/strong><\/td><td>Environmental barrier plus molded mounting or locating features<\/td><td>Adds wall thickness and magnetic working gap<\/td><\/tr>\r\n            <tr><td><strong>Soft elastomer \/ rubber coating<\/strong><\/td><td>Surface protection, friction and impact cushioning<\/td><td>Soft layer can deform and also increases working gap<\/td><\/tr>\r\n            <tr><td><strong>Epoxy coating<\/strong><\/td><td>Thin corrosion-protection layer where a housing is unnecessary<\/td><td>Does not create the same mechanical enclosure as a molded shell<\/td><\/tr>\r\n            <tr><td><strong>PTFE protection<\/strong><\/td><td>Low-friction or application-specific chemical-contact requirements<\/td><td>Material and processing route must match the project geometry<\/td><\/tr>\r\n            <tr><td><strong>Conventional plated NdFeB<\/strong><\/td><td>Minimum magnetic gap in a controlled environment<\/td><td>Provides less physical isolation from moisture, impact or direct chemical contact<\/td><\/tr>\r\n          <\/tbody>\r\n        <\/table>\r\n      <\/div>\r\n      <p>If friction and anti-slip behavior are the primary requirements, use an <a href=\"https:\/\/ct.semitanker.com\/rubber-coated-magnet\/\">OSENC rubber coated magnet<\/a> rather than forcing a rigid plastic housing into the wrong application.<\/p>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"section\">\r\n    <div class=\"wrap\">\r\n      <h2>Custom Engineering, Mounting and Magnetization<\/h2>\r\n      <div class=\"grid-2\">\r\n        <div>\r\n          <h3>Mechanical Integration<\/h3>\r\n          <p>OSENC integrates the magnet into the finished component rather than treating the polymer as decoration added after the magnetic design.<\/p>\r\n          <ul>\r\n            <li>Through holes, countersinks and counterbores<\/li>\r\n            <li>Brass inserts, steel inserts and threaded inserts<\/li>\r\n            <li>Functional plastic housings, tabs and locating features<\/li>\r\n            <li>CNC plastic housing for prototype validation<\/li>\r\n            <li>Prototype, single-cavity and multi-cavity tooling routes<\/li>\r\n          <\/ul>\r\n        <\/div>\r\n        <div>\r\n          <h3>Magnetization and Production Sequence<\/h3>\r\n          <p>OSENC supports axial, diametrical, through-thickness, length, width and multipole magnetization. The pole layout is released against the magnetic circuit and finished assembly geometry.<\/p>\r\n          <p>For strong NdFeB overmolded assemblies, OSENC can complete the magnetic core and polymer structure before final magnetization so magnetic attraction does not interfere with tooling, positioning or assembly. The released process plan controls the final sequence.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"tag-row\">\r\n        <span class=\"tag\">Insert Molding<\/span>\r\n        <span class=\"tag\">Overmolding<\/span>\r\n        <span class=\"tag\">Functional Housing<\/span>\r\n        <span class=\"tag\">Threaded Inserts<\/span>\r\n        <span class=\"tag\">Multipole<\/span>\r\n        <span class=\"tag\">MOQ 1<\/span>\r\n      <\/div>\r\n      <figure class=\"media\" style=\"margin-top:24px\">\r\n        <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2026\/08\/osenc-magnet-housing-mounting-features.webp\" width=\"1200\" height=\"460\" alt=\"Illustrative countersunk holes and threaded inserts in plastic magnet assemblies\" loading=\"lazy\">\r\n      <\/figure>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"section soft\">\r\n    <div class=\"wrap\">\r\n      <h2>Finished-Part Quality Control<\/h2>\r\n      <div class=\"grid-2\">\r\n        <div class=\"card\">\r\n          <h3>Standard Drawing Inspection<\/h3>\r\n          <p>Every released plastic-coated magnet project is inspected against the finished-part drawing for the applicable dimensional, encapsulation and magnetic requirements.<\/p>\r\n          <ul>\r\n            <li>Finished OD, length, width, height, holes and critical interfaces<\/li>\r\n            <li>Wall thickness and active-face geometry according to drawing<\/li>\r\n            <li>Flow mark, parting line, gate mark, flash, short shot and sink mark<\/li>\r\n            <li>Bubble, crack, contamination and exposed-magnet defects<\/li>\r\n            <li>Magnetization direction and pole pattern<\/li>\r\n          <\/ul>\r\n        <\/div>\r\n        <div class=\"card\">\r\n          <h3>Project-Specific Validation<\/h3>\r\n          <p>When the drawing includes magnetic or mechanical acceptance requirements, OSENC adds the agreed validation method to the QC plan.<\/p>\r\n          <ul>\r\n            <li>Core retention and anti-rotation<\/li>\r\n            <li>Pull-off, drop, impact or shell-integrity checks<\/li>\r\n            <li>Surface Gauss and working-gap Gauss at defined measurement positions<\/li>\r\n            <li>Normal Pull Force at 0.0 \/ 0.5 \/ 1.0 \/ 1.5 \/ 2.0 mm working gaps when required<\/li>\r\n            <li>Shear \/ Slide Force at the same defined gap points when required<\/li>\r\n          <\/ul>\r\n        <\/div>\r\n      <\/div>\r\n      <p><strong>OSENC locks finished dimensions, magnetic acceptance criteria, operating-temperature requirements and environmental conditions in the project drawing and QC specification.<\/strong> Acceptance values remain product-specific rather than being copied across unrelated plastic-coated magnet designs.<\/p>\r\n      <figure class=\"media\" style=\"margin-top:24px\">\r\n        <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2026\/08\/osenc-magnet-dimensional-magnetic-inspection.webp\" width=\"1200\" height=\"462\" alt=\"Illustrative magnet quality-control inspection concept\" loading=\"lazy\">\r\n      <\/figure>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"section\">\r\n    <div class=\"wrap\">\r\n      <h2>Water, Salt Water and Chemical Exposure<\/h2>\r\n      <div class=\"grid-2\">\r\n        <div>\r\n          <h3>Wet and Water-Contact Applications<\/h3>\r\n          <p>OSENC designs fully encapsulated NdFeB assemblies for wet, humid, wash-down and water-contact applications. We define the resin, sealing boundary, holes, inserts and exposure condition in the finished drawing so the protection requirement is tied to a specific component design.<\/p>\r\n          <p>For marine, aquarium or aquaculture projects, OSENC requires the salt concentration, water temperature, immersion duration, cleaning method and any metal insert that crosses the plastic barrier.<\/p>\r\n        <\/div>\r\n        <div>\r\n          <h3>Acids, Alkalis, Solvents and Cleaners<\/h3>\r\n          <p>OSENC defines polymer compatibility using <strong>Chemical + Concentration + Temperature + Exposure Time + Plastic Material<\/strong>. The released resin grade is matched to the stated service condition instead of relying on a generic \u201cacid resistant\u201d or \u201calkali resistant\u201d claim.<\/p>\r\n          <p>This approach keeps chemical resistance, wall thickness, temperature and assembly geometry inside the same engineering review.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"section soft\">\r\n    <div class=\"wrap\">\r\n      <h2>Applications for OSENC Plastic Coated Neodymium Magnets<\/h2>\r\n      <div class=\"grid-2\">\r\n        <div class=\"card\">\r\n          <h3>Aquarium and Aquaculture Equipment<\/h3>\r\n          <p>OSENC supplies encapsulated magnetic components for high-humidity, splash and salt-water assemblies where the NdFeB core requires a physical barrier from the environment.<\/p>\r\n        <\/div>\r\n        <div class=\"card\">\r\n          <h3>Laboratory and Chemical Equipment<\/h3>\r\n          <p>OSENC engineers polymer-protected magnetic assemblies for equipment exposed to defined acids, alkalis, solvents or cleaning media, with the polymer selected against the actual service condition.<\/p>\r\n        <\/div>\r\n        <div class=\"card\">\r\n          <h3>Outdoor and Wet-Environment Assemblies<\/h3>\r\n          <p>OSENC builds magnetic components for sensors, closures, furniture fixing, material handling and installation systems that require protection from moisture, impact or direct surface contact.<\/p>\r\n        <\/div>\r\n        <div class=\"card\">\r\n          <h3>Surface-Sensitive Holding<\/h3>\r\n          <p>OSENC uses a polymer interface where direct metal contact must be avoided. When friction and anti-slip behavior are more important than a rigid housing, we move the design to a softer elastomer or rubber-coated structure.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"section soft\">\r\n    <div class=\"wrap\">\r\n      <div class=\"grid-2\">\r\n        <div>\r\n          <h2>What to Send OSENC for an Engineering Quote<\/h2>\r\n          <ul>\r\n            <li>2D drawing, 3D model or dimensioned sketch<\/li>\r\n            <li>Finished dimensions and critical tolerances<\/li>\r\n            <li>NdFeB grade requirement or operating-temperature target<\/li>\r\n            <li>Magnetization direction or pole pattern<\/li>\r\n            <li>Polymer preference, color, hardness or surface requirement<\/li>\r\n            <li>Required coverage and exposed areas<\/li>\r\n            <li>Water, salt water, acid, alkali, solvent, oil or cleaner exposure<\/li>\r\n            <li>Chemical concentration, temperature and exposure duration<\/li>\r\n            <li>Target material, steel thickness, surface condition and working gap<\/li>\r\n            <li>Required validation points: 0.0 \/ 0.5 \/ 1.0 \/ 1.5 \/ 2.0 mm gap<\/li>\r\n            <li>Surface Gauss, working-gap Gauss, Normal Pull Force or Shear \/ Slide Force acceptance requirement<\/li>\r\n            <li>Mounting holes, countersinks, counterbores, inserts, threads, tabs or molded interfaces<\/li>\r\n            <li>Prototype and production quantity targets<\/li>\r\n          <\/ul>\r\n        <\/div>\r\n        <figure class=\"media\">\r\n          <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2026\/08\/osenc-plastic-magnet-production-batch.webp\" width=\"1200\" height=\"462\" alt=\"Illustrative batch production concept for plastic coated magnets\" loading=\"lazy\">\r\n        <\/figure>\r\n      <\/div>\r\n\r\n      <div class=\"cta\" style=\"margin-top:30px\">\r\n        <h2>Send Your Drawing for Engineering Quote<\/h2>\r\n        <p>Send your drawing, working environment, magnetic requirement and quantity. OSENC will review the magnet core, polymer structure, mounting details and magnetic working gap before quotation and prototype release.<\/p>\r\n        <a class=\"btn\" href=\"https:\/\/ct.semitanker.com\/contact-us\/\">Send Your Drawing for Engineering Quote<\/a>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"section faq\">\r\n    <div class=\"wrap\">\r\n      <h2>FAQ<\/h2>\r\n\r\n      <details>\r\n        <summary>Are plastic coated neodymium magnets waterproof?<\/summary>\r\n        <p>OSENC designs fully encapsulated NdFeB assemblies for water-contact and wet-environment applications. We define the resin, sealing boundary, holes, inserts and exposure condition in the finished drawing so waterproof requirements are tied to a specific product design rather than a generic coating claim.<\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>Does plastic coating reduce magnetic strength?<\/summary>\r\n        <p>The NdFeB grade is not reduced simply because the magnet is covered, but the plastic adds non-magnetic distance between the magnet core and the target. OSENC therefore engineers active-face wall thickness and working gap together when field or pull force is critical.<\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>Are plastic coated magnets the same as plastic bonded magnets?<\/summary>\r\n        <p>No. Plastic coated magnets use a solid NdFeB core with a separate protective polymer layer or housing. Plastic bonded magnets mix magnetic powder with a polymer binder and mold the magnetic material itself.<\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>Which plastics can OSENC use for encapsulation?<\/summary>\r\n        <p>OSENC works with ABS, PP, TPE, TPU, PU, PTFE, acrylic and nylon for custom projects. The released resin grade is selected against temperature, chemicals, hardness, wall thickness, dimensional requirements and the manufacturing route.<\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>Can OSENC add holes, countersinks or threaded inserts?<\/summary>\r\n        <p>Yes. OSENC integrates through holes, countersinks, counterbores, brass inserts, steel inserts and threaded inserts when the geometry, fastener and retention requirement are defined on the finished-part drawing.<\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>How does OSENC test magnetic performance through the plastic wall?<\/summary>\r\n        <p>For projects with magnetic acceptance requirements, OSENC can test the finished plastic-coated magnet at 0.0, 0.5, 1.0, 1.5 and 2.0 mm working gaps. The validation record can include Surface Gauss, Working-gap Gauss, Normal Pull Force and Shear \/ Slide Force. Target material, steel thickness, surface condition, contact area, orientation and test direction are fixed before results are released.<\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>What should I send OSENC for quotation?<\/summary>\r\n        <p>Send the finished-part drawing, environmental conditions, magnetization direction, working gap, mounting details, quantity and any pull-force or field requirement with a defined test condition.<\/p>\r\n      <\/details>\r\n    <\/div>\r\n  <\/section>\r\n\r\n<\/section>\r\n\r\n<script type=\"application\/ld+json\">\r\n{\r\n  \"@context\": \"https:\/\/schema.org\",\r\n  \"@type\": \"Product\",\r\n  \"name\": \"Plastic Coated Neodymium Magnets\",\r\n  \"url\": \"https:\/\/ct.semitanker.com\/plastic-magnets\/\",\r\n  \"description\": \"Custom plastic coated neodymium magnets with partial or full encapsulation, overmolding, functional plastic housings, mounting inserts and application-specific magnetization.\",\r\n  \"brand\": {\r\n    \"@type\": \"Brand\",\r\n    \"name\": \"OSENC\"\r\n  },\r\n  \"manufacturer\": {\r\n    \"@type\": \"Organization\",\r\n    \"name\": \"OSENC\",\r\n    \"url\": \"https:\/\/ct.semitanker.com\/\"\r\n  },\r\n  \"category\": \"Plastic Coated Neodymium Magnets\",\r\n  \"additionalProperty\": [\r\n    {\r\n      \"@type\": \"PropertyValue\",\r\n      \"name\": \"Magnet Core\",\r\n      \"value\": \"Sintered NdFeB\"\r\n    },\r\n    {\r\n      \"@type\": \"PropertyValue\",\r\n      \"name\": \"Encapsulation\",\r\n      \"value\": \"Partial encapsulation, full encapsulation and functional plastic housings\"\r\n    },\r\n    {\r\n      \"@type\": \"PropertyValue\",\r\n      \"name\": \"Manufacturing Routes\",\r\n      \"value\": \"Insert molding, overmolding, CNC plastic housing, prototype tooling, single-cavity and multi-cavity production tooling\"\r\n    },\r\n    {\r\n      \"@type\": \"PropertyValue\",\r\n      \"name\": \"Polymer Options\",\r\n      \"value\": \"ABS, PP, TPE, TPU, PU, PTFE, acrylic and nylon; released resin grade and process are project-specific\"\r\n    },\r\n    {\r\n      \"@type\": \"PropertyValue\",\r\n      \"name\": \"Working Gap Test Points\",\r\n      \"value\": \"0.0 mm, 0.5 mm, 1.0 mm, 1.5 mm, 2.0 mm\"\r\n    },\r\n    {\r\n      \"@type\": \"PropertyValue\",\r\n      \"name\": \"Magnetic Validation Metrics\",\r\n      \"value\": \"Surface Gauss, Working-gap Gauss, Normal Pull Force, Shear \/ Slide Force\"\r\n    },\r\n    {\r\n      \"@type\": \"PropertyValue\",\r\n      \"name\": \"Prototype Quantity\",\r\n      \"value\": \"MOQ 1 for custom magnet projects\"\r\n    }\r\n  ]\r\n}\r\n<\/script>\r\n\r\n<script type=\"application\/ld+json\">\r\n{\r\n  \"@context\": \"https:\/\/schema.org\",\r\n  \"@type\": \"FAQPage\",\r\n  \"mainEntity\": [\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"Are plastic coated neodymium magnets waterproof?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"OSENC designs fully encapsulated NdFeB assemblies for water-contact and wet-environment applications. 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The validation record can include Surface Gauss, Working-gap Gauss, Normal Pull Force and Shear \/ Slide Force. 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We engineer the polymer wall, working gap and magnetic circuit together so the finished component meets both protection and magnetic performance requirements. Partial &amp; Full Encapsulation Insert [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2969,"parent":0,"menu_order":6,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1842","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/ct.semitanker.com\/es\/wp-json\/wp\/v2\/pages\/1842","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ct.semitanker.com\/es\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/ct.semitanker.com\/es\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/ct.semitanker.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ct.semitanker.com\/es\/wp-json\/wp\/v2\/comments?post=1842"}],"version-history":[{"count":15,"href":"https:\/\/ct.semitanker.com\/es\/wp-json\/wp\/v2\/pages\/1842\/revisions"}],"predecessor-version":[{"id":8737,"href":"https:\/\/ct.semitanker.com\/es\/wp-json\/wp\/v2\/pages\/1842\/revisions\/8737"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ct.semitanker.com\/es\/wp-json\/wp\/v2\/media\/2969"}],"wp:attachment":[{"href":"https:\/\/ct.semitanker.com\/es\/wp-json\/wp\/v2\/media?parent=1842"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}