{"id":322,"date":"2025-10-08T14:27:59","date_gmt":"2025-10-08T14:27:59","guid":{"rendered":"https:\/\/spartaseal.com\/?p=322"},"modified":"2025-10-09T00:23:51","modified_gmt":"2025-10-09T00:23:51","slug":"what-is-a-ptfe-washer-a-comprehensive-technical-review-for-global-engineers-and-procurement-teams-2025","status":"publish","type":"post","link":"https:\/\/spartaseal.com\/ru\/what-is-a-ptfe-washer-a-comprehensive-technical-review-for-global-engineers-and-procurement-teams-2025\/","title":{"rendered":"What Is a PTFE Washer? A Comprehensive Technical Review for Global Engineers and Procurement Teams 2025"},"content":{"rendered":"<style>\n  :root{\n    --text:#111;--muted:#5a6570;--brand:#0b6aa2;--accent:#0a7f44;\n    --bg:#ffffff;--card:#f7fbff;--border:#e6eef5;--warn:#b66900\n  }\n  .wrap{max-width:1060px;margin:0 auto;padding:18px}\n  .hero{margin:0;padding:0;border-bottom:1px solid var(--border);background:#fff}\n  .hero .inner{max-width:1060px;margin:0 auto;padding:10px 18px}\n  .badge{display:inline-block;background:var(--card);border:1px solid var(--border);padding:3px 10px;border-radius:999px;font-size:.82rem;color:var(--muted);margin-right:8px}\n  p,li{color:var(--text);line-height:1.75}\n  a{color:var(--brand);text-decoration:none}\n  a:hover{text-decoration:underline}\n  .section{margin:22px 0}\n  .lead{font-weight:700;margin:6px 0 10px}\n  .grid{display:grid;gap:16px}\n  @media(min-width:760px){.g-2{grid-template-columns:1fr 1fr}.g-3{grid-template-columns:repeat(3,1fr)}}\n  .card{background:#fff;border:1px solid var(--border);border-radius:12px;padding:18px}\n  .ok{border-left:4px solid var(--accent);padding-left:12px}\n  .warn{background:#fff7e6;border:1px solid #ffe2b7}\n  table{width:100%;border-collapse:collapse;border:1px solid var(--border);background:#fff;margin:12px 0}\n  th,td{border-bottom:1px solid var(--border);padding:10px;text-align:left;vertical-align:top}\n  th{background:#f5fbff}\n  figure{margin:14px 0;border:1px solid var(--border);border-radius:10px;overflow:hidden;background:#fff}\n  figcaption{padding:8px 12px;border-top:1px solid var(--border);font-size:.92rem;color:var(--muted)}\n  img.resp{display:block;max-width:100%;height:auto;border-radius:10px}\n  .kpi{display:flex;flex-wrap:wrap;gap:10px;margin:10px 0}\n  .chip{background:#fff;border:1px solid var(--border);padding:8px 10px;border-radius:10px}\n  .mini{font-size:.92rem;color:var(--muted)}\n  .faq .q{font-weight:700;margin:8px 0 6px}\n  .entry-content > *:first-child, .elementor-widget-container > *:first-child { margin-top:0 !important }\n<\/style>\n<p><script type=\"application\/ld+json\">\n{\n  \"@context\":\"https:\/\/schema.org\",\n  \"@graph\":[\n    {\n      \"@type\":\"Article\",\n      \"headline\":\"What Is a PTFE Washer? A Comprehensive Technical Review for Global Engineers and Procurement Teams (2025)\",\n      \"inLanguage\":\"en\",\n      \"datePublished\":\"2025-10-08\",\n      \"dateModified\":\"2025-10-08\",\n      \"author\":{\"@type\":\"Organization\",\"name\":\"SPARTA SEALING\"},\n      \"publisher\":{\"@type\":\"Organization\",\"name\":\"SPARTA SEALING\"},\n      \"about\":[\"PTFE washer\",\"gasket and seal technology\",\"chemical resistance\",\"low friction bearings\"],\n      \"keywords\":\"PTFE washer, Teflon washer, fluoropolymer gasket, chemical resistance, creep cold flow, torque retention, FDA compliant, dry lubrication, PV limit, compression set\",\n      \"articleSection\":[\"Definition and composition\",\"Material science\",\"Design and sizing\",\"Performance and testing\",\"Applications and standards\",\"Sourcing and QA\"],\n      \"citation\":[\n        \"https:\/\/www.astm.org\/\",\n        \"https:\/\/www.iso.org\/\",\n        \"https:\/\/www.fda.gov\/\",\n        \"https:\/\/www.nace.org\/\",\n        \"https:\/\/www.energy.gov\/\"\n      ]\n    },\n    {\n      \"@type\":\"FAQPage\",\n      \"mainEntity\":[\n        {\"@type\":\"Question\",\"name\":\"Is PTFE safe for food and pharmaceutical uses?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Virgin PTFE grades are widely used where FDA 21 CFR 177.1550 and EU 10\/2011 compliance is required. Fillers must be evaluated individually for regulatory acceptance.\"}},\n        {\"@type\":\"Question\",\"name\":\"How to reduce cold flow of PTFE washers under high load?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Use glass\u2011 or mineral\u2011filled PTFE, add metal backup washers, enlarge bearing area, or implement serrated faces to improve grip and torque retention.\"}},\n        {\"@type\":\"Question\",\"name\":\"When should PTFE be avoided?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Avoid in dynamic applications with high PV (pressure \u00d7 velocity) without lubrication, near alkali metals or fluorinating agents, and above its continuous service temperature (~260 \u00b0C).\"}}\n      ]\n    }\n  ]\n}\n<\/script><\/p>\n<div class=\"hero\">\n<div class=\"inner\">\n    <span class=\"badge\">Format: Technical Review<\/span><br \/>\n    <span class=\"badge\">Audience: Global engineers &#038; buyers<\/span><br \/>\n    <span class=\"badge\">Updated: 2025<\/span><\/p>\n<p class=\"mini\">This review explains PTFE washers from materials science to sizing, performance limits, standards, and sourcing practices. It also contrasts virgin and filled PTFE grades and provides data tables for design decisions.<\/p>\n<\/p><\/div>\n<\/div>\n<p><main class=\"wrap\"><\/p>\n<section class=\"section\">\n<p class=\"lead\">Definition and composition<\/p>\n<p>A PTFE washer is a flat, annular component molded or skived from polytetrafluoroethylene and used to distribute clamping force, isolate metals, seal against fluids, or provide a low\u2011friction interface. PTFE\u2019s carbon\u2013fluorine backbone yields exceptional chemical inertness and a low surface energy (~18 mN\/m), which translates to very low static and dynamic coefficients of friction (typically 0.05\u20130.10 against polished steel under light load). Washers are produced as virgin PTFE or as composite grades filled with glass fiber, carbon, graphite, bronze, or mineral fillers to tune mechanical behavior.<\/p>\n<div class=\"kpi\">\n      <span class=\"chip\">Continuous service temperature: \u2212200 to +260 \u00b0C<\/span><br \/>\n      <span class=\"chip\">Water absorption: <0.01% (24 h)<\/span><br \/>\n      <span class=\"chip\">Dielectric strength: ~60\u2013100 kV\/mm (grade\u2011dependent)<\/span><br \/>\n      <span class=\"chip\">Typical friction: 0.05\u20130.10 \u03bc vs. steel<\/span>\n    <\/div>\n<\/section>\n<section class=\"section\">\n<p class=\"lead\">Material science: why PTFE behaves differently<\/p>\n<ul>\n<li>Non\u2011stick surface: the fully fluorinated chain resists adhesion, reducing galling and allowing dry\u2011running interfaces.<\/li>\n<li>Chemical resistance: inert to most acids, bases, solvents, and oxidizers; avoid molten alkali metals and elemental fluorine; hot concentrated alkali may cause etching over long exposure.<\/li>\n<li>Thermal behavior: glass transition around \u2212100 \u00b0C; crystalline melt ~327 \u00b0C; practical continuous service up to 260 \u00b0C with strength derating.<\/li>\n<li>Creep (cold flow): under sustained compressive load PTFE deforms plastically; filled grades reduce creep and raise modulus by 25\u2013200% depending on filler type and content.<\/li>\n<li>Electrical properties: high volume resistivity and low dissipation factor; useful for insulation\/isolation washers in sensors and RF hardware.<\/li>\n<\/ul>\n<\/section>\n<section class=\"section\">\n<p class=\"lead\">Virgin vs. filled PTFE washers<\/p>\n<table>\n<thead>\n<tr>\n<th>\u041a\u043b\u0430\u0441\u0441<\/th>\n<th>Advantages<\/th>\n<th>Limitations<\/th>\n<th>Typical uses<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0412\u0438\u0440\u0433\u0438\u043d\u0441\u043a\u0438\u0439 \u041f\u0422\u0424\u042d<\/td>\n<td>Highest chemical purity, lowest friction, FDA suitability<\/td>\n<td>Highest cold flow; lower compressive strength<\/td>\n<td>Food\/pharma equipment, electrical isolation, low clamp loads<\/td>\n<\/tr>\n<tr>\n<td>Glass\u2011filled (15\u201325%)<\/td>\n<td>Improved creep resistance and modulus; better torque retention<\/td>\n<td>Can abrade mating surfaces; slightly higher friction<\/td>\n<td>Valve packing glands, bolted flanges with periodic thermal cycling<\/td>\n<\/tr>\n<tr>\n<td>\u0423\u0433\u043b\u0435\u0440\u043e\u0434\u043d\u043e\u0435\/\u0433\u0440\u0430\u0444\u0438\u0442\u043e\u0432\u043e\u0435 \u043d\u0430\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435<\/td>\n<td>Enhanced wear and thermal conductivity; lower deformation<\/td>\n<td>Darker color; may alter dielectric behavior<\/td>\n<td>Semi\u2011dynamic joints, pump bases, cryogenic sliding pads<\/td>\n<\/tr>\n<tr>\n<td>Bronze\u2011filled (40\u201360%)<\/td>\n<td>High compressive strength, better heat dissipation<\/td>\n<td>Reduced chemical resistance vs. virgin; higher density<\/td>\n<td>High\u2011load bearings, heavy clamps with temperature cycling<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n<section class=\"section\">\n<p class=\"lead\">Sizing fundamentals and torque retention<\/p>\n<p>For sealing or isolation duties, designers balance clamp force, contact pressure, and creep over temperature. Contact pressure P equals preload F divided by effective bearing area A. Virgin PTFE may require larger outer diameters or thicker sections to maintain P within 10\u201330 MPa without excessive creep. Where flange surface finish is rougher than Ra 3.2 \u03bcm, a soft intermediary (PTFE envelope over elastomer core) improves micro\u2011sealing.<\/p>\n<div class=\"grid g-2\">\n<div class=\"card ok\">\n<p class=\"lead\">Practical rules of thumb<\/p>\n<ul>\n<li>Washer thickness: 1.0\u20133.0 mm for M6\u2013M16; thicker sections for electrical isolation or uneven surfaces.<\/li>\n<li>OD\/ID ratio: \u22651.8 for virgin PTFE under high preload; can drop to 1.5 with filled grades or steel backup washers.<\/li>\n<li>Edge treatment: chamfer or radius to avoid extrusion lips.<\/li>\n<\/ul><\/div>\n<div class=\"card warn\">\n<p class=\"lead\">Cold\u2011flow mitigation<\/p>\n<ul>\n<li>Use serrated metal washers against PTFE faces to increase friction.<\/li>\n<li>Retorque after first thermal cycle; schedule inspection after 24\u201348 hours.<\/li>\n<li>Consider PTFE\u2011bonded rubber or PTFE\u2011enveloped gaskets for flanges requiring elastic recovery.<\/li>\n<\/ul><\/div>\n<\/p><\/div>\n<\/section>\n<section class=\"section\">\n<p class=\"lead\">Performance limits and test methods<\/p>\n<table>\n<thead>\n<tr>\n<th>\u041d\u0435\u0434\u0432\u0438\u0436\u0438\u043c\u043e\u0441\u0442\u044c<\/th>\n<th>Typical value<\/th>\n<th>Reference methods<\/th>\n<th>Notes<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u041f\u043b\u043e\u0442\u043d\u043e\u0441\u0442\u044c<\/td>\n<td>2,13-2,20 \u0433\/\u0441\u043c\u00b3<\/td>\n<td>ASTM D792<\/td>\n<td>Filler content increases density up to ~3.1 g\/cm\u00b3 (bronze\u2011filled)<\/td>\n<\/tr>\n<tr>\n<td>Tensile strength (virgin)<\/td>\n<td>20-35 \u041c\u041f\u0430<\/td>\n<td>ASTM D638<\/td>\n<td>Decreases with temperature<\/td>\n<\/tr>\n<tr>\n<td>\u0423\u0434\u043b\u0438\u043d\u0435\u043d\u0438\u0435 \u043f\u0440\u0438 \u0440\u0430\u0437\u0440\u044b\u0432\u0435<\/td>\n<td>200-400%<\/td>\n<td>ASTM D638<\/td>\n<td>Indicates ductility; filled grades lower<\/td>\n<\/tr>\n<tr>\n<td>\u0422\u0432\u0435\u0440\u0434\u043e\u0441\u0442\u044c<\/td>\n<td>\u0428\u043e\u0440 D 50-60<\/td>\n<td>ASTM D2240<\/td>\n<td>Filler raises hardness<\/td>\n<\/tr>\n<tr>\n<td>Coefficient of friction<\/td>\n<td>0.05\u20130.10 (dry vs. steel)<\/td>\n<td>ASTM D1894 (\u0430\u043d\u0430\u043b\u043e\u0433)<\/td>\n<td>Surface finish and load sensitive<\/td>\n<\/tr>\n<tr>\n<td>\u0422\u0435\u043f\u043b\u043e\u043f\u0440\u043e\u0432\u043e\u0434\u043d\u043e\u0441\u0442\u044c<\/td>\n<td>0.25 W\/m\u00b7K (virgin)<\/td>\n<td>ASTM E1530<\/td>\n<td>Carbon\/bronze fillers increase to 0.5\u20131.5 W\/m\u00b7K<\/td>\n<\/tr>\n<tr>\n<td>Max continuous service temp<\/td>\n<td>~260 \u00b0C<\/td>\n<td>Manufacturer data<\/td>\n<td>Short excursions higher may be tolerated<\/td>\n<\/tr>\n<tr>\n<td>Volume resistivity<\/td>\n<td>10^17 \u03a9\u00b7cm<\/td>\n<td>ASTM D257<\/td>\n<td>Useful for isolation washers<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n<section class=\"section\">\n<p class=\"lead\">Application domains<\/p>\n<ul>\n<li>Chemical process: isolation washers for glass\u2011lined steel and exotic alloy interfaces; resist acids, bases, halogenated solvents.<\/li>\n<li>Food and pharma: non\u2011stick, cleanability, and regulatory pathways for virgin grades; avoid pigments and fillers lacking compliance evidence.<\/li>\n<li>Cryogenics: low brittleness down to \u2212196 \u00b0C; stable frictional behavior beneficial for LNG valves and cold test rigs.<\/li>\n<li>Electronics: dielectric spacers and antenna hardware; low dissipation factor reduces RF loss.<\/li>\n<li>Water treatment: isolation between dissimilar metals to limit galvanic corrosion.<\/li>\n<\/ul>\n<\/section>\n<section class=\"section\">\n<p class=\"lead\">PTFE washers versus alternative materials<\/p>\n<table>\n<thead>\n<tr>\n<th>Material<\/th>\n<th>Chemical resistance<\/th>\n<th>Temperature range<\/th>\n<th>Creep\/elastic recovery<\/th>\n<th>Friction<\/th>\n<th>Notes<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>PTFE (virgin)<\/td>\n<td>\u041f\u0440\u0435\u0432\u043e\u0441\u0445\u043e\u0434\u043d\u043e<\/td>\n<td>\u2212200 to +260 \u00b0C<\/td>\n<td>High creep \/ low elastic recovery<\/td>\n<td>Very low<\/td>\n<td>Best for chemical purity and dry lubrication<\/td>\n<\/tr>\n<tr>\n<td>Filled PTFE<\/td>\n<td>Excellent\u2013very good<\/td>\n<td>\u2212200 to +260 \u00b0C<\/td>\n<td>Reduced creep<\/td>\n<td>Low\u2013medium<\/td>\n<td>Better torque retention<\/td>\n<\/tr>\n<tr>\n<td>PEEK<\/td>\n<td>Very good<\/td>\n<td>\u221250 to +250 \u00b0C<\/td>\n<td>Low creep \/ high modulus<\/td>\n<td>Medium<\/td>\n<td>High strength; costlier<\/td>\n<\/tr>\n<tr>\n<td>Nylon\/PA<\/td>\n<td>Fair (affected by moisture)<\/td>\n<td>\u221240 to +120 \u00b0C<\/td>\n<td>Medium creep<\/td>\n<td>Medium<\/td>\n<td>Economical isolation where chemicals are benign<\/td>\n<\/tr>\n<tr>\n<td>Fibre\/laminate (G10)<\/td>\n<td>\u0425\u043e\u0440\u043e\u0448\u043e<\/td>\n<td>\u221250 to +150 \u00b0C<\/td>\n<td>Low creep<\/td>\n<td>Medium<\/td>\n<td>Strong electrical insulation; less chemical inertness<\/td>\n<\/tr>\n<tr>\n<td>Metal (SS\/Brass)<\/td>\n<td>Variable<\/td>\n<td>Wide<\/td>\n<td>Very low creep<\/td>\n<td>High<\/td>\n<td>High load but no chemical isolation; may gall<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n<section class=\"section\">\n<p class=\"lead\">Design examples with quantitative guidance<\/p>\n<div class=\"grid g-2\">\n<div class=\"card\">\n<p class=\"lead\">Electrical isolation joint (M10 bolt)<\/p>\n<ul>\n<li>Target preload: 12\u201318 kN (class 8.8 bolt, 70% proof as upper bound).<\/li>\n<li>Washer: PTFE 2.0 mm thick, ID 10.5 mm, OD 22\u201324 mm; add stainless backup washer to reduce creep.<\/li>\n<li>Expected contact pressure: ~25\u201335 MPa assuming 420\u2013450 mm\u00b2 area.<\/li>\n<\/ul><\/div>\n<div class=\"card\">\n<p class=\"lead\">Chemical flange with micro\u2011sealing needs<\/p>\n<ul>\n<li>Use PTFE\u2011envelope washer with elastomer core (FKM\/EPDM to medium compatibility).<\/li>\n<li>Torque to gasket manufacturer\u2019s seating stress, retorque after first heat cycle.<\/li>\n<li>Surface finish: Ra \u22643.2 \u03bcm; irregular flanges require thicker core for recovery.<\/li>\n<\/ul><\/div>\n<\/p><\/div>\n<\/section>\n<section class=\"section\">\n<p class=\"lead\">Quality assurance and sourcing checklist<\/p>\n<ul>\n<li>Material certificates: verify resin grade and filler percentage; for regulated industries, request FDA\/EU statements for contact compliance.<\/li>\n<li>Dimensional tolerances: for OD\/ID \u00b10.2\u20130.3 mm typical; thickness \u00b10.05\u20130.1 mm for skived sheet, wider for molded parts.<\/li>\n<li>Surface finish: avoid tool marks or chatter that could start extrusion paths; specify deburring and edge radii.<\/li>\n<li>Lot traceability and aging: PTFE is stable; still, document production date and sintering profile for repeatability.<\/li>\n<li>Packaging: flat layered packs with interleaves to prevent warping; cleanroom bagging for sanitary uses.<\/li>\n<\/ul>\n<p class=\"mini\">For engineered sealing programs and custom washers, see <a href=\"https:\/\/spartaseal.com\/\" rel=\"nofollow\">\u0423\u041f\u041b\u041e\u0422\u041d\u0415\u041d\u0418\u0415 SPARTA<\/a>. Company profile and capabilities are outlined on the <a href=\"https:\/\/spartaseal.com\/about\/\" rel=\"nofollow\">\u0442\u044e\u043b\u0435\u043d\u044c\u044f \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u044f<\/a> \u0441\u0442\u0440\u0430\u043d\u0438\u0446\u0430.<\/p>\n<\/section>\n<section class=\"section\">\n<p class=\"lead\">Illustrative images: PTFE in assembly contexts<\/p>\n<figure>\n      <img decoding=\"async\" class=\"resp\" loading=\"lazy\" src=\"https:\/\/dummyimage.com\/1200x675\/e6eef5\/0b6aa2.png&#038;text=PTFE+Washer+Use+Cases:+Flange,+Electrical+Isolation,+Low-Friction+Interface\" alt=\"Illustration of PTFE washer applications: flange sealing, electrical isolation, low-friction support\" width=\"1200\"><figcaption>Conceptual image illustrating three common PTFE washer use cases. Replace with project photos when available.<\/figcaption><\/figure>\n<\/section>\n<section class=\"section faq\">\n<p class=\"lead\">\u0427\u0430\u0441\u0442\u043e \u0437\u0430\u0434\u0430\u0432\u0430\u0435\u043c\u044b\u0435 \u0432\u043e\u043f\u0440\u043e\u0441\u044b<\/p>\n<div class=\"card\">\n<div class=\"q\">How should torque be adjusted when switching from metal to PTFE washers?<\/div>\n<div>Reduce torque to prevent extrusion, add a metal backup washer, and verify clamp load via bolt\u2011stretch or load\u2011indicating devices. Retorque after thermal cycling because PTFE relaxes under sustained stress.<\/div>\n<\/div>\n<div class=\"card\">\n<div class=\"q\">Are PTFE washers compatible with strong oxidizers?<\/div>\n<div>Yes for most, including nitric and chlorine solutions, but avoid elemental fluorine and molten alkali metals. Assess permeation at elevated temperatures for long\u2011term exposure.<\/div>\n<\/div>\n<div class=\"card\">\n<div class=\"q\">What\u2019s the best way to machine custom PTFE washers?<\/div>\n<div>Use sharp tools with generous rake, low clamping pressure, and chilled stock to limit deformation. For tight thickness control, prefer skived sheet cut by die or waterjet, then deburr.<\/div>\n<\/div>\n<\/section>\n<section class=\"section\">\n<p class=\"lead\">References and further reading<\/p>\n<ul class=\"mini\">\n<li>ASTM D4894\/D4895 \u2014 PTFE resin specifications: https:\/\/www.astm.org\/<\/li>\n<li>ASTM F36, F38 \u2014 compressibility and creep relaxation of gasket materials: https:\/\/www.astm.org\/<\/li>\n<li>FDA 21 CFR 177.1550 \u2014 perfluorocarbon resins for food contact: https:\/\/www.fda.gov\/<\/li>\n<li>ISO 15527 \u2014 plastics \u2014 determination of static friction \u2014 context for tribological data: https:\/\/www.iso.org\/<\/li>\n<li>NACE\/AMPP corrosion control resources for bolted joints: https:\/\/www.nace.org\/<\/li>\n<\/ul>\n<p class=\"mini\">This review synthesizes consensus properties and practices discussed across high\u2011ranking technical sources available via Google Search in 2024\u20132025 (materials handbooks, polymer datasheets, gasket standards). It is written originally and does not copy those sources. Links above provide standards and regulatory references for verification.<\/p>\n<\/section>\n<p><\/main><\/p>","protected":false},"excerpt":{"rendered":"<p>A PTFE washer is a flat, annular component molded or skived from polytetrafluoroethylene and used to distribute clamping force, isolate metals, seal against fluids, or provide a low\u2011friction interface. PTFE\u2019s carbon\u2013fluorine backbone yields exceptional chemical inertness and a low surface energy (~18 mN\/m), which translates to very low static and dynamic coefficients of friction (typically 0.05\u20130.10 against polished steel under light load). Washers are produced as virgin PTFE or as composite grades filled with glass fiber, carbon, graphite, bronze, or mineral fillers to tune mechanical behavior.<\/p>","protected":false},"author":1,"featured_media":355,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","footnotes":""},"categories":[27],"tags":[],"class_list":["post-322","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seals-knowledge"],"_links":{"self":[{"href":"https:\/\/spartaseal.com\/ru\/wp-json\/wp\/v2\/posts\/322","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/spartaseal.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/spartaseal.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/spartaseal.com\/ru\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/spartaseal.com\/ru\/wp-json\/wp\/v2\/comments?post=322"}],"version-history":[{"count":2,"href":"https:\/\/spartaseal.com\/ru\/wp-json\/wp\/v2\/posts\/322\/revisions"}],"predecessor-version":[{"id":356,"href":"https:\/\/spartaseal.com\/ru\/wp-json\/wp\/v2\/posts\/322\/revisions\/356"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/spartaseal.com\/ru\/wp-json\/wp\/v2\/media\/355"}],"wp:attachment":[{"href":"https:\/\/spartaseal.com\/ru\/wp-json\/wp\/v2\/media?parent=322"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/spartaseal.com\/ru\/wp-json\/wp\/v2\/categories?post=322"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/spartaseal.com\/ru\/wp-json\/wp\/v2\/tags?post=322"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}