{"id":559,"date":"2022-11-06T10:01:01","date_gmt":"2022-11-06T10:01:01","guid":{"rendered":"https:\/\/neosumk.com\/?page_id=559"},"modified":"2026-08-16T09:19:54","modified_gmt":"2026-08-16T01:19:54","slug":"teflon-coated-magnets","status":"publish","type":"page","link":"https:\/\/ct.semitanker.com\/fr\/teflon-coated-magnets\/","title":{"rendered":"Aimant avec rev\u00eatement en Teflon"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"559\" class=\"elementor elementor-559\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-647a61e e-con e-atomic-element e-div-block-base e-647a61e-37356bd \" data-id=\"647a61e\" data-element_type=\"e-div-block\" data-e-type=\"e-div-block\" data-interaction-id=\"647a61e\" data-e-type=\"e-div-block\" data-id=\"647a61e\">\n    \t\t<div class=\"elementor-element elementor-element-578df83 elementor-widget elementor-widget-html\" data-id=\"578df83\" data-element_type=\"widget\" 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var(--osenc-line);border-radius:12px;background:#fff\r\n}\r\n@media (max-width:1050px){\r\n  .osenc-pdp .osenc-pdp__metrics{grid-template-columns:repeat(2,minmax(0,1fr))}\r\n  .osenc-pdp .osenc-pdp__why{grid-template-columns:repeat(2,minmax(0,1fr))}\r\n}\r\n@media (max-width:700px){\r\n  .osenc-pdp .osenc-pdp__metrics,\r\n  .osenc-pdp .osenc-pdp__why,\r\n  .osenc-pdp .osenc-pdp__mini-grid{grid-template-columns:1fr}\r\n}\r\n\r\n.osenc-pdp .osenc-pdp__figure{margin:28px 0 0}\r\n.osenc-pdp .osenc-pdp__figure img{\r\n  display:block;width:100%;height:auto;border-radius:10px\r\n}\r\n\r\n.osenc-pdp .osenc-pdp__figure--boxed{\r\n  padding:18px;background:#fff;border:1px solid var(--osenc-line);\r\n  border-radius:var(--osenc-radius);box-shadow:var(--osenc-shadow)\r\n}\r\n<\/style>\r\n<section class=\"osenc-pdp\">\r\n<div class=\"osenc-pdp__hero\">\r\n<div class=\"osenc-pdp__container\">\r\n<div class=\"osenc-pdp__hero-grid\">\r\n<div>\r\n<span class=\"osenc-pdp__kicker\">Custom PTFE Coated Neodymium Magnet Manufacturer<\/span>\r\n<h1>Custom PTFE Coated Neodymium Magnets<\/h1>\r\n<p class=\"osenc-pdp__lead\">OSENC manufactures PTFE coated neodymium magnets in two controlled constructions: black NdFeB + Ni-Cu-Ni + PTFE coating and white PTFE encapsulation. We control PTFE build, finished dimensions, tolerance, magnet grade, magnetization and protected surfaces to the approved drawing.<\/p>\r\n<p class=\"osenc-pdp__small\"><strong>Material naming:<\/strong> this page specifies the surface system as PTFE. The historical URL is retained for continuity, but quotations and drawings use the PTFE construction defined for the project.<\/p>\r\n<div class=\"osenc-pdp__quick\">\r\n<strong>Quick Answer<\/strong>\r\n            Black PTFE is the right choice when you need low friction, non-stick behavior and chemical protection with minimal dimensional build. White PTFE encapsulation is the stronger choice when complete PTFE isolation is more important than minimizing magnetic air gap.\r\n          <\/div>\r\n<div class=\"osenc-pdp__buttons\">\r\n<a class=\"osenc-pdp__btn osenc-pdp__btn--primary\" href=\"https:\/\/ct.semitanker.com\/contact-us\/\">Send Drawing for PTFE Magnet Quote<\/a>\r\n<a class=\"osenc-pdp__btn osenc-pdp__btn--secondary\" href=\"https:\/\/ct.semitanker.com\/neodymium-magnet-coating\/\">Compare Magnet Coatings<\/a>\r\n<\/div>\r\n<div class=\"osenc-pdp__metrics\">\r\n<div class=\"osenc-pdp__metric\"><strong>15\u201335 \u03bcm<\/strong><span>Black PTFE top-layer range<\/span><\/div>\r\n<div class=\"osenc-pdp__metric\"><strong>0.5\u20131.5 mm<\/strong><span>White PTFE housing wall<\/span><\/div>\r\n<div class=\"osenc-pdp__metric\"><strong>\u00b10.05 mm<\/strong><span>Precision black PTFE finished tolerance<\/span><\/div>\r\n<div class=\"osenc-pdp__metric\"><strong>N35\u2013N52 + H\u2013EH<\/strong><span>NdFeB grade coverage<\/span><\/div>\r\n<div class=\"osenc-pdp__metric\"><strong>MOQ 1<\/strong><span>Custom sampling available<\/span><\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"osenc-pdp__media\">\r\n<img fetchpriority=\"high\" alt=\"Black PTFE coated neodymium magnets with mounting holes from OSENC\" decoding=\"async\" fetchpriority=\"high\" height=\"600\" loading=\"eager\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2023\/04\/Teflon-coating-magnet.webp\" width=\"600\"\/>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"osenc-pdp__section osenc-pdp__section--soft\">\r\n<div class=\"osenc-pdp__container\">\r\n<h2>PTFE Coated Neodymium Magnet Specifications<\/h2>\r\n<p>OSENC quotes black PTFE coating and white PTFE encapsulation as separate engineering systems because they have different dimensional build, protection behavior and magnetic air-gap consequences.<\/p>\r\n<div class=\"osenc-pdp__table-wrap\">\r\n<table>\r\n<thead>\r\n<tr><th>Specification<\/th><th>Black PTFE Coated Magnet<\/th><th>White PTFE Encapsulated Magnet<\/th><\/tr>\r\n<\/thead>\r\n<tbody>\r\n<tr><td><strong>Construction<\/strong><\/td><td>NdFeB + Ni-Cu-Ni + PTFE<\/td><td>NdFeB magnetic core inside PTFE housing \/ encapsulation<\/td><\/tr>\r\n<tr><td><strong>PTFE Build<\/strong><\/td><td>15\u201335 \u03bcm; 25 \u03bcm typical<\/td><td>Approx. 0.5\u20131.5 mm wall; 0.7\u20131.0 mm common on thin working faces<\/td><\/tr>\r\n<tr><td><strong>Finished Tolerance<\/strong><\/td><td>\u00b10.10 mm standard; \u00b10.05 mm precision<\/td><td>\u00b10.10 mm standard; \u00b10.20 mm engineering tolerance for more complex housings<\/td><\/tr>\r\n<tr><td><strong>Protection<\/strong><\/td><td>Thin conformal functional layer over the plated magnet<\/td><td>Full-encapsulation version provides a 100% PTFE external surface<\/td><\/tr>\r\n<tr><td><strong>Choose This When<\/strong><\/td><td>Minimum build, low friction and chemical-exposure resistance are priorities<\/td><td>Complete PTFE isolation and wet \/ liquid-contact protection are priorities<\/td><\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n<figure class=\"osenc-pdp__figure osenc-pdp__figure--boxed\"><img loading=\"lazy\" alt=\"Illustration of black PTFE coated neodymium magnet shapes\" decoding=\"async\" height=\"900\" loading=\"lazy\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2026\/08\/01-black-ptfe-coated-magnets.webp\" width=\"1200\"\/><\/figure><\/div>\r\n<\/div>\r\n<div class=\"osenc-pdp__section\">\r\n<div class=\"osenc-pdp__container\">\r\n<h2>Black PTFE Coating vs White PTFE Encapsulation<\/h2>\r\n<div class=\"osenc-pdp__grid-2\">\r\n<div class=\"osenc-pdp__choice\">\r\n<span class=\"osenc-pdp__tag\">Black PTFE<\/span>\r\n<h3>NdFeB + Ni-Cu-Ni + PTFE<\/h3>\r\n<div class=\"osenc-pdp__decision\">Choose black PTFE when you need PTFE surface behavior with the smallest practical dimensional build.<\/div>\r\n<ul class=\"osenc-pdp__list\">\r\n<li>PTFE top layer: 15\u201335 \u03bcm; 25 \u03bcm typical.<\/li>\r\n<li>Finished tolerance: \u00b10.10 mm standard; \u00b10.05 mm precision.<\/li>\r\n<li>Through-hole walls and countersunk surfaces can be coated.<\/li>\r\n<li>Masking can reserve bonding or electrical contact surfaces.<\/li>\r\n<\/ul>\r\n<\/div>\r\n<div class=\"osenc-pdp__choice\">\r\n<span class=\"osenc-pdp__tag\">White PTFE<\/span>\r\n<h3>PTFE Housing + Magnet<\/h3>\r\n<div class=\"osenc-pdp__decision\">Choose white PTFE encapsulation when complete isolation is more important than minimizing magnetic air gap.<\/div>\r\n<ul class=\"osenc-pdp__list\">\r\n<li>PTFE wall: approximately 0.5\u20131.5 mm.<\/li>\r\n<li>Thin magnetic working faces commonly use approximately 0.7\u20131.0 mm.<\/li>\r\n<li>Full encapsulation gives a 100% PTFE external surface.<\/li>\r\n<li>Finished tolerance: \u00b10.10 mm standard; \u00b10.20 mm engineering for more complex housings.<\/li>\r\n<\/ul>\r\n<\/div>\r\n<\/div>\r\n<div class=\"osenc-pdp__split\" style=\"margin-top:34px\">\r\n<div>\r\n<h3>Choose the PTFE Construction by Exposure and Assembly Fit<\/h3>\r\n<p>OSENC does not treat black and white PTFE as color options. Coating versus housing changes the finished size, protected edges, inspection method and magnetic working distance.<\/p>\r\n<div class=\"osenc-pdp__callout\"><strong>Drawing rule:<\/strong> specify black PTFE coating or white PTFE encapsulation, then define finished dimensions, protected surfaces, masked areas and critical assembly clearances.<\/div>\r\n<\/div>\r\n<div class=\"osenc-pdp__media\">\r\n<img loading=\"lazy\" alt=\"Illustration comparing black PTFE coated magnets and white PTFE encapsulated magnets\" decoding=\"async\" height=\"900\" loading=\"lazy\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2026\/08\/02-black-vs-white-ptfe-magnets.webp\" width=\"1200\"\/>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"osenc-pdp__section osenc-pdp__section--soft\" style=\"padding-top:0\">\r\n<div class=\"osenc-pdp__container\">\r\n<div class=\"osenc-pdp__callout\" style=\"margin-top:0\">\r\n<strong>Not sure which PTFE construction fits your assembly?<\/strong> Send the drawing, working gap, chemical environment and critical fit. OSENC will review black PTFE coating versus white PTFE encapsulation before quotation.\r\n<div class=\"osenc-pdp__buttons\" style=\"margin-top:16px\">\r\n<a class=\"osenc-pdp__btn osenc-pdp__btn--primary\" href=\"https:\/\/ct.semitanker.com\/contact-us\/\">Send Drawing for PTFE Selection Review<\/a>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"osenc-pdp__section osenc-pdp__section--soft\">\r\n<div class=\"osenc-pdp__container\">\r\n<h2>Why OSENC for Custom PTFE Magnets<\/h2>\r\n<p>We build the coating, magnetic material and finished-part requirements into one controlled specification instead of treating PTFE as an afterthought.<\/p>\r\n<div class=\"osenc-pdp__why\">\r\n<div class=\"osenc-pdp__why-item\"><strong>Two PTFE Systems<\/strong><span>Black thin-film PTFE coating and white full PTFE encapsulation from one custom magnet program.<\/span><\/div>\r\n<div class=\"osenc-pdp__why-item\"><strong>Finished-Part Control<\/strong><span>Black PTFE finished tolerance down to \u00b10.05 mm for precision requirements.<\/span><\/div>\r\n<div class=\"osenc-pdp__why-item\"><strong>Grade Selection<\/strong><span>N35\u2013N52 plus H, SH, UH and EH grades for the required temperature class.<\/span><\/div>\r\n<div class=\"osenc-pdp__why-item\"><strong>Custom Magnetization<\/strong><span>Axial, diametrical, thickness, length, width and multipole configurations.<\/span><\/div>\r\n<div class=\"osenc-pdp__why-item\"><strong>MOQ 1 Sampling<\/strong><span>Validate fit, PTFE construction and magnetic performance before production.<\/span><\/div>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"osenc-pdp__section\">\r\n<div class=\"osenc-pdp__container\">\r\n<div class=\"osenc-pdp__split\">\r\n<div class=\"osenc-pdp__media\">\r\n<img loading=\"lazy\" alt=\"Illustration of custom PTFE coated magnet shapes with holes and countersunk features\" decoding=\"async\" height=\"900\" loading=\"lazy\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2026\/08\/03-custom-ptfe-magnet-shapes.webp\" width=\"1200\"\/>\r\n<\/div>\r\n<div>\r\n<h2>Shapes, Coverage and Finished Tolerances<\/h2>\r\n<p>OSENC manufactures PTFE coated and PTFE encapsulated magnets in disc, block, ring, cylinder, countersunk and custom assembly geometries. We control the finished PTFE part to the approved drawing rather than applying bare-magnet dimensions to the coated component.<\/p>\r\n<ul class=\"osenc-pdp__list\">\r\n<li>Full surface PTFE coating<\/li>\r\n<li>Hole-wall and countersunk-surface coating<\/li>\r\n<li>Partial masking<\/li>\r\n<li>Reserved bonding and contact surfaces<\/li>\r\n<li>No exposed NdFeB or underlayer on surfaces defined for full protection<\/li>\r\n<\/ul>\r\n<div class=\"osenc-pdp__callout\"><strong>Edge design:<\/strong> chamfers or radii improve PTFE film continuity and reduce local coating damage during handling and assembly. We avoid knife-sharp protected edges on coated designs.<\/div>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"osenc-pdp__section osenc-pdp__section--soft\">\r\n<div class=\"osenc-pdp__container\">\r\n<h2>PTFE Thickness and Magnetic Air Gap<\/h2>\r\n<p>PTFE thickness is not only a surface specification. It changes the magnetic working distance. Black PTFE adds only tens of microns to the finished part, while white PTFE encapsulation can add millimeters across the diameter.<\/p>\r\n<div class=\"osenc-pdp__mini-grid\">\r\n<div class=\"osenc-pdp__mini\"><h3>Black PTFE<\/h3><p>A 15\u201335 \u03bcm PTFE layer adds approximately 0.03\u20130.07 mm across two coated sides before any other dimensional features are considered.<\/p><\/div>\r\n<div class=\"osenc-pdp__mini\"><h3>White PTFE<\/h3><p>A 0.7 mm radial PTFE wall increases the outside diameter by about 1.4 mm.<\/p><\/div>\r\n<div class=\"osenc-pdp__mini\"><h3>Magnetic Design<\/h3><p>OSENC includes PTFE build in the assembly clearance and magnetic air-gap review before the sample is released.<\/p><\/div>\r\n<\/div>\r\n<div class=\"osenc-pdp__media\" style=\"max-width:520px;margin:30px auto 0\">\r\n<img loading=\"lazy\" alt=\"Illustration of PTFE housing thickness around a neodymium magnetic core\" decoding=\"async\" height=\"900\" loading=\"lazy\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2026\/08\/04-ptfe-encapsulation-cutaway.webp\" width=\"1200\"\/>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"osenc-pdp__section\">\r\n<div class=\"osenc-pdp__container\">\r\n<h2>Select PTFE Magnet Operating Temperature by NdFeB Grade<\/h2>\r\n<p>We rate the finished magnet from the magnetic grade and magnetic circuit, not from the PTFE resin temperature alone. The following grade classes are the first engineering boundary for PTFE-coated NdFeB designs.<\/p>\r\n<div class=\"osenc-pdp__table-wrap\">\r\n<table>\r\n<thead><tr><th>NdFeB Grade Class<\/th><th>Reference Continuous Operating Limit<\/th><th>OSENC Selection Direction<\/th><\/tr><\/thead>\r\n<tbody>\r\n<tr><td><strong>Standard N42<\/strong><\/td><td>80 \u00b0C<\/td><td>General PTFE-coated magnet applications without elevated-temperature duty.<\/td><\/tr>\r\n<tr><td><strong>H<\/strong><\/td><td>120 \u00b0C<\/td><td>Higher-temperature magnetic circuits using the appropriate H-grade material.<\/td><\/tr>\r\n<tr><td><strong>SH \/ N42SH<\/strong><\/td><td>150 \u00b0C<\/td><td>High-temperature PTFE-coated designs requiring SH-grade coercivity.<\/td><\/tr>\r\n<tr><td><strong>UH<\/strong><\/td><td>180 \u00b0C<\/td><td>Higher-temperature assemblies using UH-grade NdFeB.<\/td><\/tr>\r\n<tr><td><strong>EH<\/strong><\/td><td>200 \u00b0C<\/td><td>High-temperature assemblies where EH-grade material and the magnetic circuit support the duty.<\/td><\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n<div class=\"osenc-pdp__grid-2\" style=\"margin-top:24px\">\r\n<div class=\"osenc-pdp__card\"><h3>Grade Range<\/h3><p>OSENC PTFE projects cover N35\u2013N52 plus H, SH, UH and EH families.<\/p><\/div>\r\n<div class=\"osenc-pdp__card\"><h3>Magnetization<\/h3><p>Disc \/ Ring \/ Cylinder: axial or diametrical. Block: thickness, length or width. Special parts can use multipole layouts.<\/p><\/div>\r\n<\/div>\r\n<div class=\"osenc-pdp__callout\"><strong>Temperature control:<\/strong> final allowable temperature also depends on magnet geometry, operating point, magnetic circuit and exposure duration. PTFE polymer temperature capability is not used as the finished-magnet rating.<\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"osenc-pdp__section osenc-pdp__section--soft\">\r\n<div class=\"osenc-pdp__container\">\r\n<h2>Applications for PTFE Coated Neodymium Magnets<\/h2>\r\n<p>OSENC specifies PTFE when its surface or isolation behavior solves a defined working-condition problem.<\/p>\r\n<div class=\"osenc-pdp__grid-2\">\r\n<div class=\"osenc-pdp__card\">\r\n<h3>Chemical &amp; Liquid Exposure<\/h3>\r\n<p>Water, oils, solvents, acids, alkalis and cleaning media where the actual chemical, concentration, temperature and exposure duration are defined.<\/p>\r\n<\/div>\r\n<div class=\"osenc-pdp__card\">\r\n<h3>Low-Friction Contact<\/h3>\r\n<p>Sliding, release and non-stick surfaces where reducing friction and material buildup is part of the design.<\/p>\r\n<\/div>\r\n<div class=\"osenc-pdp__card\">\r\n<h3>Wet Magnetic Components<\/h3>\r\n<p>White full-encapsulation structures where the NdFeB core must remain physically isolated from the working environment.<\/p>\r\n<\/div>\r\n<div class=\"osenc-pdp__card\">\r\n<h3>Elevated Temperature<\/h3>\r\n<p>PTFE surface requirements combined with the correct H, SH, UH or EH magnetic grade for the operating temperature.<\/p>\r\n<\/div>\r\n<\/div>\r\n<p class=\"osenc-pdp__small\" style=\"margin-top:20px\">PTFE magnet constructions are used in engineered components for laboratory equipment, chemical handling, sensors, battery-material equipment and other controlled magnetic assemblies. Food, pharmaceutical or medical compliance is only specified when the required PTFE resin and project documentation are defined.<\/p>\r\n<figure class=\"osenc-pdp__figure osenc-pdp__figure--boxed\"><img loading=\"lazy\" alt=\"Illustrative PTFE protected magnetic component in a wet process environment\" decoding=\"async\" height=\"900\" loading=\"lazy\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2026\/08\/05-ptfe-wet-chemical-application.webp\" width=\"1200\"\/><\/figure><\/div>\r\n<\/div>\r\n<div class=\"osenc-pdp__section\">\r\n<div class=\"osenc-pdp__container\">\r\n<h2>PTFE vs Parylene vs Epoxy vs Nickel Magnet Coatings<\/h2>\r\n<p>We select the coating from the required surface behavior, environment and dimensional build rather than using a generic corrosion ranking.<\/p>\r\n<div class=\"osenc-pdp__table-wrap\">\r\n<table>\r\n<thead><tr><th>Coating<\/th><th>OSENC Uses It When<\/th><th>Main Purchasing Check<\/th><\/tr><\/thead>\r\n<tbody>\r\n<tr><td><strong>PTFE<\/strong><\/td><td>Low friction, non-stick behavior, clean release or chemical exposure is central to the design.<\/td><td>Coating versus encapsulation, PTFE build, chemical medium, temperature and edge coverage.<\/td><\/tr>\r\n<tr><td><strong><a href=\"https:\/\/ct.semitanker.com\/parylene-coating-for-magnets\/\">Parylene<\/a><\/strong><\/td><td>A thin conformal polymer barrier or electrical-insulation layer is required with less dimensional build than PTFE encapsulation.<\/td><td>Required thickness, adhesion, coverage, operating environment and finished-part validation.<\/td><\/tr>\r\n<tr><td><strong><a href=\"https:\/\/ct.semitanker.com\/epoxy-coating-for-magnets\/\">Epoxy<\/a><\/strong><\/td><td>A polymer protective finish is required without the dimensional or surface behavior of PTFE.<\/td><td>Coating system, edge damage, finished dimensions and corrosion-test condition.<\/td><\/tr>\r\n<tr><td><strong><a href=\"https:\/\/ct.semitanker.com\/nickel-coating-for-magnets\/\">Nickel-Based<\/a><\/strong><\/td><td>A common metallic finish is appropriate for general handling and assembly.<\/td><td>Layer stack, corrosion environment, contact condition and dimensional build.<\/td><\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n<p class=\"osenc-pdp__small\" style=\"margin-top:16px\">For thin conformal polymer protection where PTFE encapsulation adds too much magnetic air gap, compare <a href=\"https:\/\/ct.semitanker.com\/parylene-coating-for-magnets\/\">Parylene coated magnets<\/a>. For broader coating selection, review <a href=\"https:\/\/ct.semitanker.com\/neodymium-magnet-coating\/\">neodymium magnet coating options<\/a>.<\/p>\r\n<\/div>\r\n<\/div>\r\n<div class=\"osenc-pdp__section osenc-pdp__section--soft\">\r\n<div class=\"osenc-pdp__container\">\r\n<h2>PTFE Coated Magnet Quality Control<\/h2>\r\n<div class=\"osenc-pdp__grid-2\">\r\n<div class=\"osenc-pdp__card\">\r\n<h3>Finished Dimensions<\/h3>\r\n<p>We inspect critical dimensions after the complete PTFE coating or housing process, not from the bare magnet alone.<\/p>\r\n<\/div>\r\n<div class=\"osenc-pdp__card\">\r\n<h3>PTFE Coverage<\/h3>\r\n<p>Protected surfaces, holes, countersinks, masked areas and exposed functional areas are checked against the approved drawing.<\/p>\r\n<\/div>\r\n<div class=\"osenc-pdp__card\">\r\n<h3>Surface Integrity<\/h3>\r\n<p>We inspect protected surfaces for exposed substrate or underlayer and control coating adhesion against the approved project requirement.<\/p>\r\n<\/div>\r\n<div class=\"osenc-pdp__card\">\r\n<h3>Magnetization<\/h3>\r\n<p>Pole direction and magnetization configuration are controlled to the drawing or approved sample.<\/p>\r\n<\/div>\r\n<\/div>\r\n<div class=\"osenc-pdp__callout\"><strong>For integrity-critical projects:<\/strong> OSENC sets the barrier-integrity test method, sampling level and acceptance criteria with the approved specification instead of publishing an unsupported universal \u201czero pinholes\u201d claim.<\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"osenc-pdp__section\">\r\n<div class=\"osenc-pdp__container\">\r\n<div class=\"osenc-pdp__split\">\r\n<div>\r\n<h2>Send These 6 Inputs for a PTFE Magnet Quote<\/h2>\r\n<p>Send the finished-part requirement and OSENC can move directly into engineering review and sampling.<\/p>\r\n<div class=\"osenc-pdp__rfq\">\r\n<div class=\"osenc-pdp__rfq-item\"><strong>1. Drawing \/ Size<\/strong><span>Finished dimensions, tolerances, holes, countersinks and critical fits.<\/span><\/div>\r\n<div class=\"osenc-pdp__rfq-item\"><strong>2. Grade<\/strong><span>N35\u2013N52 or H \/ SH \/ UH \/ EH, or give us the magnetic target.<\/span><\/div>\r\n<div class=\"osenc-pdp__rfq-item\"><strong>3. Magnetization<\/strong><span>Axial, diametrical, thickness, length, width or multipole.<\/span><\/div>\r\n<div class=\"osenc-pdp__rfq-item\"><strong>4. PTFE System<\/strong><span>Black PTFE coating or white PTFE encapsulation.<\/span><\/div>\r\n<div class=\"osenc-pdp__rfq-item\"><strong>5. Environment<\/strong><span>Continuous \/ peak temperature and chemical exposure conditions.<\/span><\/div>\r\n<div class=\"osenc-pdp__rfq-item\"><strong>6. Coverage \/ QC<\/strong><span>Coated areas, masking, immersion or integrity-test requirements.<\/span><\/div>\r\n<\/div>\r\n<div class=\"osenc-pdp__callout\"><strong>Custom sampling MOQ: 1.<\/strong> PTFE special-process pricing and production quantity are quoted against the approved drawing and inspection requirement.<\/div>\r\n<\/div>\r\n<div class=\"osenc-pdp__media\">\r\n<img loading=\"lazy\" alt=\"White PTFE protected magnet components used for custom quotation review\" decoding=\"async\" height=\"300\" loading=\"lazy\" src=\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2023\/03\/10001-300x300.webp\" width=\"300\"\/>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"osenc-pdp__section osenc-pdp__section--soft\">\r\n<div class=\"osenc-pdp__container\">\r\n<h2>PTFE Coated Magnet Buyer FAQs<\/h2>\r\n<div class=\"osenc-pdp__faq\">\r\n<details class=\"osenc-pdp__faq-item\">\r\n<summary>Which is better: black PTFE coating or white PTFE encapsulation?<\/summary>\r\n<div class=\"osenc-pdp__faq-answer\"><p>Choose black PTFE when low friction, non-stick behavior and chemical protection are required with minimal dimensional build. Choose white PTFE encapsulation when complete PTFE isolation is more important than minimizing magnetic air gap.<\/p><\/div>\r\n<\/details>\r\n<details class=\"osenc-pdp__faq-item\">\r\n<summary>How thick is the PTFE coating on a neodymium magnet?<\/summary>\r\n<div class=\"osenc-pdp__faq-answer\"><p>OSENC specifies the black PTFE top layer at 15\u201335 \u03bcm, with 25 \u03bcm as a typical design value. The white PTFE housing is much thicker, approximately 0.5\u20131.5 mm.<\/p><\/div>\r\n<\/details>\r\n<details class=\"osenc-pdp__faq-item\">\r\n<summary>How does PTFE encapsulation affect magnetic force?<\/summary>\r\n<div class=\"osenc-pdp__faq-answer\"><p>PTFE housing thickness increases the distance between the magnetic core and the target. For example, a 0.7 mm radial wall adds about 1.4 mm to outside diameter. OSENC includes this air gap in the magnetic and assembly review before sampling.<\/p><\/div>\r\n<\/details>\r\n<details class=\"osenc-pdp__faq-item\">\r\n<summary>What temperature can a PTFE coated neodymium magnet operate at?<\/summary>\r\n<div class=\"osenc-pdp__faq-answer\"><p>Use the NdFeB grade as the first boundary: standard N42 80 \u00b0C, H 120 \u00b0C, SH 150 \u00b0C, UH 180 \u00b0C and EH 200 \u00b0C. Final allowable temperature also depends on magnet geometry, magnetic circuit, operating point and exposure duration.<\/p><\/div>\r\n<\/details>\r\n<details class=\"osenc-pdp__faq-item\">\r\n<summary>Can OSENC coat holes and countersunk surfaces with PTFE?<\/summary>\r\n<div class=\"osenc-pdp__faq-answer\"><p>Yes. OSENC can include through-hole walls and countersunk surfaces in the PTFE coating area, and can mask specified bonding or electrical contact surfaces.<\/p><\/div>\r\n<\/details>\r\n<details class=\"osenc-pdp__faq-item\">\r\n<summary>Can I order one custom PTFE magnet sample?<\/summary>\r\n<div class=\"osenc-pdp__faq-answer\"><p>Yes. MOQ 1 is available for custom sampling. Send the finished drawing, grade or magnetic target, magnetization, PTFE construction, operating environment and inspection requirements.<\/p><\/div>\r\n<\/details>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"osenc-pdp__section\" style=\"padding-top:0\">\r\n<div class=\"osenc-pdp__container\">\r\n<div class=\"osenc-pdp__cta\">\r\n<h2>Send Your PTFE Magnet Drawing to OSENC<\/h2>\r\n<p>Send the drawing, PTFE construction, finished dimensions, grade or magnetic target, magnetization, operating temperature, chemical environment and quantity. OSENC will define the coating or encapsulation build, finished tolerance and magnetic grade before sampling.<\/p>\r\n<div class=\"osenc-pdp__buttons\">\r\n<a class=\"osenc-pdp__btn osenc-pdp__btn--primary\" href=\"https:\/\/ct.semitanker.com\/contact-us\/\">Request a Custom PTFE Magnet Quote<\/a>\r\n<a class=\"osenc-pdp__btn osenc-pdp__btn--secondary\" href=\"https:\/\/ct.semitanker.com\/neodymium-magnets\/\" style=\"background:transparent;color:#fff;border-color:#7d9ab5\">View Neodymium Magnet Capability<\/a>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<\/section>\r\n<script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"Product\", \"@id\": \"https:\/\/ct.semitanker.com\/teflon-coated-magnets\/#product\", \"name\": \"Custom PTFE Coated Neodymium Magnets\", \"url\": \"https:\/\/ct.semitanker.com\/teflon-coated-magnets\/\", \"image\": [\"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2023\/04\/Teflon-coating-magnet.webp\", \"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2023\/03\/10002.webp\", \"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2023\/01\/PTFE-Coating.webp\", \"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2023\/01\/Teflon-magnet.webp\", \"https:\/\/ct.semitanker.com\/wp-content\/uploads\/2023\/03\/10001-300x300.webp\"], \"description\": \"Custom PTFE coated neodymium magnets from OSENC, including black NdFeB + Ni-Cu-Ni + PTFE coating and white PTFE encapsulated magnet constructions with controlled PTFE build, finished tolerances, magnet grades, magnetization and custom protected surfaces.\", \"brand\": {\"@type\": \"Brand\", \"name\": \"OSENC\"}, \"manufacturer\": {\"@type\": \"Organization\", \"name\": \"OSENC\", \"url\": \"https:\/\/ct.semitanker.com\/\"}, \"category\": \"PTFE Coated Neodymium Magnets\", \"additionalProperty\": [{\"@type\": \"PropertyValue\", \"name\": \"Black PTFE coating structure\", \"value\": \"NdFeB + Ni-Cu-Ni + PTFE\"}, {\"@type\": \"PropertyValue\", \"name\": \"Black PTFE thickness\", \"value\": \"15\u201335 \u03bcm; 25 \u03bcm typical\"}, {\"@type\": \"PropertyValue\", \"name\": \"White PTFE housing wall\", \"value\": \"Approx. 0.5\u20131.5 mm\"}, {\"@type\": \"PropertyValue\", \"name\": \"Black PTFE finished tolerance\", \"value\": \"\u00b10.10 mm standard; \u00b10.05 mm precision\"}, {\"@type\": \"PropertyValue\", \"name\": \"White PTFE finished tolerance\", \"value\": \"\u00b10.10 mm standard; \u00b10.20 mm engineering\"}, {\"@type\": \"PropertyValue\", \"name\": \"Magnet grades\", \"value\": \"N35\u2013N52; H; SH; UH; EH\"}, {\"@type\": \"PropertyValue\", \"name\": \"Custom sample MOQ\", \"value\": \"1\"}]}<\/script>\r\n<script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"@id\": \"https:\/\/ct.semitanker.com\/teflon-coated-magnets\/#faq\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Which is better: black PTFE coating or white PTFE encapsulation?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Choose black PTFE when low friction, non-stick behavior and chemical protection are required with minimal dimensional build. Choose white PTFE encapsulation when complete PTFE isolation is more important than minimizing magnetic air gap.\"}}, {\"@type\": \"Question\", \"name\": \"How thick is the PTFE coating on a neodymium magnet?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"OSENC specifies the black PTFE top layer at 15\u201335 \u03bcm, with 25 \u03bcm as a typical design value. The white PTFE housing is much thicker, approximately 0.5\u20131.5 mm.\"}}, {\"@type\": \"Question\", \"name\": \"How does PTFE encapsulation affect magnetic force?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"PTFE housing thickness increases the distance between the magnetic core and the target. For example, a 0.7 mm radial wall adds about 1.4 mm to outside diameter. OSENC includes this air gap in the magnetic and assembly review before sampling.\"}}, {\"@type\": \"Question\", \"name\": \"What temperature can a PTFE coated neodymium magnet operate at?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Use the NdFeB grade as the first boundary: standard N42 80 \u00b0C, H 120 \u00b0C, SH 150 \u00b0C, UH 180 \u00b0C and EH 200 \u00b0C. Final allowable temperature also depends on magnet geometry, magnetic circuit, operating point and exposure duration.\"}}, {\"@type\": \"Question\", \"name\": \"Can OSENC coat holes and countersunk surfaces with PTFE?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. OSENC can include through-hole walls and countersunk surfaces in the PTFE coating area, and can mask specified bonding or electrical contact surfaces.\"}}, {\"@type\": \"Question\", \"name\": \"Can I order one custom PTFE magnet sample?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. MOQ 1 is available for custom sampling. Send the finished drawing, grade or magnetic target, magnetization, PTFE construction, operating environment and inspection requirements.\"}}]}<\/script>\r\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ct.semitanker.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Neodymium Magnets\",\"item\":\"https:\/\/ct.semitanker.com\/neodymium-magnets\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"PTFE Coated Neodymium Magnets\",\"item\":\"https:\/\/ct.semitanker.com\/teflon-coated-magnets\/\"}]}<\/script>\t\t\t\t<\/div>\n\t\t\n<\/div>\n\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Custom PTFE Coated Neodymium Magnet Manufacturer Custom PTFE Coated Neodymium Magnets OSENC manufactures PTFE coated neodymium magnets in two controlled constructions: black NdFeB + Ni-Cu-Ni + PTFE coating and white PTFE encapsulation. We control PTFE build, finished dimensions, tolerance, magnet grade, magnetization and protected surfaces to the approved drawing. Material naming: this page specifies the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4231,"parent":0,"menu_order":24,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-559","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/ct.semitanker.com\/fr\/wp-json\/wp\/v2\/pages\/559","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ct.semitanker.com\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/ct.semitanker.com\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/ct.semitanker.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ct.semitanker.com\/fr\/wp-json\/wp\/v2\/comments?post=559"}],"version-history":[{"count":12,"href":"https:\/\/ct.semitanker.com\/fr\/wp-json\/wp\/v2\/pages\/559\/revisions"}],"predecessor-version":[{"id":8743,"href":"https:\/\/ct.semitanker.com\/fr\/wp-json\/wp\/v2\/pages\/559\/revisions\/8743"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ct.semitanker.com\/fr\/wp-json\/wp\/v2\/media\/4231"}],"wp:attachment":[{"href":"https:\/\/ct.semitanker.com\/fr\/wp-json\/wp\/v2\/media?parent=559"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}