{"product_id":"tc-fb-skeleton-oil-seal-nbr-double-lip-rotation-shaft-id-12mm-29mm","title":"TC FB Skeleton Oil Seal Rings NBR Double Lip Seal — Rotation Shaft ID 12mm–29mm","description":"\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose the right shaft seal size?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Measure the shaft outer diameter (ID of the seal), the bore housing inner diameter (OD of the seal), and the available axial space (seal width). This listing covers shaft IDs from 12mm (≈0.47\\u2033) to 29mm (≈1.14\\u2033). Select your size from the variant options above. If you are unsure, contact us to confirm before ordering.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What load or pressure can these oil seals handle?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"TC-type rotary shaft seals are generally designed for low-to-medium pressure applications. They typically handle lip contact pressures up to around 0.3 MPa (≈43 psi) under normal operating conditions. For high-pressure hydraulic circuits, a different seal type is recommended.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these seals suitable for outdoor or wet environments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"NBR (nitrile rubber) offers good resistance to petroleum-based oils, greases, and water splash. The double-lip design adds a secondary dust lip that helps exclude moisture and contaminants. For prolonged submersion or exposure to aggressive chemicals, a Viton (FKM) seal is generally more appropriate.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What shaft and housing standards are these compatible with?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"TC FB skeleton oil seals follow metric dimensional standards (ISO 6194 \/ DIN 3760 Type A). They are compatible with metric shafts and housings in the 12–29mm ID range. Always verify the OD and width against your housing bore before installation.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the operating temperature range for NBR oil seals?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"NBR compound typically performs reliably from approximately -40°C (-40°F) to +120°C (+248°F). Short-term excursions up to +130°C may be tolerated, but sustained high-temperature operation above this range can accelerate lip wear.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use these seals with synthetic oils or ATF?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"NBR is generally compatible with mineral-based oils, ATF, and many common gear oils. Compatibility with fully synthetic PAO or ester-based fluids varies — in most cases NBR performs adequately, but prolonged exposure to aggressive synthetics may cause slight swelling. Verify fluid compatibility with your specific oil before installation.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I install a TC-type rotary shaft seal correctly?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Clean the housing bore and shaft. Lightly lubricate the seal lip with the fluid being sealed. Press the seal squarely into the bore using a seal driver or a flat plate — never hammer directly on the seal face. Ensure the primary lip faces the oil side and the dust lip faces outward.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003ch2\u003eNBR Double Lip TC Oil Seal Rings — Reliable Rotary Shaft Sealing from 12mm to 29mm\u003c\/h2\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003cp\u003eA leaking shaft seal on a gearbox, pump, or motor can turn a minor maintenance job into a costly teardown. Whether you are a mechanic rebuilding a transmission, a maintenance tech servicing industrial equipment, or a DIYer fixing a garden tractor axle, finding the exact TC-type rotary shaft oil seal in the right size — without ordering from overseas — is often the hardest part of the job.\u003c\/p\u003e\n\n    \u003cp\u003eEach seal in this listing is a \u003cstrong\u003eTC FB skeleton double-lip rotary shaft oil seal\u003c\/strong\u003e made from \u003cstrong\u003eNBR (nitrile butadiene rubber)\u003c\/strong\u003e bonded to a rigid metal skeleton for dimensional stability. The inner diameter (shaft size) ranges from \u003cstrong\u003e12mm (≈0.47\") to 29mm (≈1.14\")\u003c\/strong\u003e; select your exact size from the variant options above. The TC profile features a primary sealing lip that contacts the rotating shaft and a secondary dust exclusion lip — both molded from NBR compound.\u003c\/p\u003e\n\n    \u003cp\u003eThese seals are well suited for \u003cstrong\u003egearbox output shaft sealing\u003c\/strong\u003e, \u003cstrong\u003eelectric motor bearing housings\u003c\/strong\u003e, \u003cstrong\u003ehydraulic pump shaft seals\u003c\/strong\u003e, small engine crankshaft applications, and agricultural or lawn equipment axle seals where a metric double-lip NBR rotary seal is specified.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-compat\"\u003e\n    \u003cspan class=\"hdiy-compat-icon\"\u003e🔵\u003c\/span\u003e\n    \u003cstrong\u003eCompatibility Note:\u003c\/strong\u003e These are metric TC-type seals (ISO 6194 \/ DIN 3760 Type A). Confirm shaft OD, housing bore ID, and seal width against your application before ordering. Sizes listed are shaft inner diameters — see variant options for full dimensional details.\n  \u003c\/div\u003e\n\n  \u003ch2\u003e✅ Key Features of These NBR Double Lip TC Rotary Shaft Oil Seals\u003c\/h2\u003e\n  \u003cul class=\"hdiy-features\"\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eTC Double-Lip Design\u003c\/strong\u003e — Primary sealing lip retains oil while the secondary dust lip blocks contaminants, making these seals effective in dirty or wet environments like agricultural equipment and outdoor machinery.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🧲\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eRigid FB Metal Skeleton\u003c\/strong\u003e — The fully bonded (FB) metal case maintains roundness during press-fit installation and prevents distortion in the housing bore, ensuring a consistent seal contact pattern on the rotating shaft.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛢️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eNBR Compound Lip Material\u003c\/strong\u003e — Nitrile rubber resists petroleum-based oils, gear lubricants, ATF, and grease across a typical operating range of -40°C to +120°C (-40°F to +248°F), covering most gearbox and pump shaft seal applications.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eWide Size Range in One Listing\u003c\/strong\u003e — Shaft IDs from 12mm (≈0.47\") to 29mm (≈1.14\") available as variants, so you can source the correct metric double lip oil seal size without hunting across multiple listings.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eMetric Standard Dimensions\u003c\/strong\u003e — Manufactured to ISO 6194 \/ DIN 3760 Type A dimensional conventions, making these direct replacements for OEM TC seals in metric gearboxes, motors, and pumps.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🚚\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eUS Warehouse Stock\u003c\/strong\u003e — Ships from our US warehouse, so you get your replacement shaft seal faster than waiting on international freight — critical when equipment downtime is costing you money.\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003e📐 Technical Specifications — TC FB Skeleton NBR Double Lip Rotary Shaft Oil Seal\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-table-wrap\"\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eSeal Type\u003c\/th\u003e\n\u003ctd\u003eTC (Double Lip, FB Skeleton)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eLip Material\u003c\/th\u003e\n\u003ctd\u003eNBR (Nitrile Butadiene Rubber)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eSkeleton \/ Case\u003c\/th\u003e\n\u003ctd\u003eCarbon steel, fully bonded (FB)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eShaft ID Range\u003c\/th\u003e\n\u003ctd\u003e12mm (≈0.47\") – 29mm (≈1.14\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eOD \/ Width\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eOperating Temperature\u003c\/th\u003e\n\u003ctd\u003eTypically -40°C to +120°C (-40°F to +248°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eMax Shaft Speed\u003c\/th\u003e\n\u003ctd\u003eContact us to confirm (typically up to 4–6 m\/s lip speed for standard NBR TC seals)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003ePressure Rating\u003c\/th\u003e\n\u003ctd\u003eLow-to-medium; typically ≤0.3 MPa (≈43 psi)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eFluid Compatibility\u003c\/th\u003e\n\u003ctd\u003ePetroleum oils, gear oil, ATF, grease, water splash\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eStandard\u003c\/th\u003e\n\u003ctd\u003eISO 6194 \/ DIN 3760 Type A (metric)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eFinish \/ Color\u003c\/th\u003e\n\u003ctd\u003eBlack rubber lip, bare metal case\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-note\"\u003e\n    \u003cspan class=\"hdiy-note-icon\"\u003e⚠️\u003c\/span\u003e\n    \u003cstrong\u003eSpec Confirmation:\u003c\/strong\u003e OD and width dimensions vary by size. If your application has tight housing tolerances, please contact us with your full seal dimensions (ID × OD × Width) before ordering so we can confirm the correct variant.\n  \u003c\/div\u003e\n\n  \u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-faq\"\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I choose the right shaft seal size?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eMeasure three dimensions: the \u003cstrong\u003eshaft outer diameter\u003c\/strong\u003e (this is the seal ID), the \u003cstrong\u003ehousing bore inner diameter\u003c\/strong\u003e (this is the seal OD), and the \u003cstrong\u003eaxial groove depth\u003c\/strong\u003e (seal width). This listing covers shaft IDs from \u003cstrong\u003e12mm (≈0.47\")\u003c\/strong\u003e to \u003cstrong\u003e29mm (≈1.14\")\u003c\/strong\u003e. Select your size from the variant options above. If you are working from an OEM part number, contact us and we can cross-reference it.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat pressure can these TC oil seals handle?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eTC-type rotary shaft seals are generally designed for \u003cstrong\u003elow-to-medium pressure\u003c\/strong\u003e environments. They typically handle lip contact pressures up to around \u003cstrong\u003e0.3 MPa (≈43 psi)\u003c\/strong\u003e under normal operating conditions. For high-pressure hydraulic circuits, a different seal type (such as a lip seal with a backup ring) is generally recommended.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eAre these seals suitable for outdoor or wet environments?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eNBR offers good resistance to petroleum-based oils, greases, and water splash. The \u003cstrong\u003edouble-lip design\u003c\/strong\u003e adds a secondary dust lip that helps exclude moisture and contaminants — making these seals a solid choice for outdoor equipment like lawn tractors, tillers, and small engines. For prolonged submersion or exposure to aggressive chemicals, a Viton (FKM) seal is generally more appropriate.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat shaft and housing standards are these compatible with?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eTC FB skeleton oil seals follow \u003cstrong\u003emetric dimensional standards (ISO 6194 \/ DIN 3760 Type A)\u003c\/strong\u003e. They are compatible with metric shafts and housings in the 12–29mm ID range. Always verify the OD and width against your housing bore before installation. These are \u003cem\u003enot\u003c\/em\u003e inch (imperial) seals — if your application uses inch dimensions, please contact us to confirm cross-compatibility.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the operating temperature range for NBR oil seals?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eNBR compound typically performs reliably from approximately \u003cstrong\u003e-40°C (-40°F) to +120°C (+248°F)\u003c\/strong\u003e. Short-term excursions up to +130°C may be tolerated, but sustained high-temperature operation above this range can accelerate lip wear and reduce seal life. If your application runs consistently above 120°C, consider a Viton (FKM) or PTFE-lipped seal instead.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan I use these seals with synthetic oils or ATF?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eNBR is generally compatible with \u003cstrong\u003emineral-based oils, ATF, and most common gear oils\u003c\/strong\u003e. Compatibility with fully synthetic PAO or ester-based fluids varies — in most cases NBR performs adequately, but prolonged exposure to aggressive synthetics may cause slight swelling. Verify fluid compatibility with your specific oil before installation, or contact us if you are unsure.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I install a TC-type rotary shaft seal correctly?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eClean the housing bore and shaft. Lightly lubricate the seal lip with the fluid being sealed. Press the seal \u003cstrong\u003esquarely\u003c\/strong\u003e into the bore using a seal driver or a flat plate — never hammer directly on the seal face. Ensure the \u003cstrong\u003eprimary lip faces the oil side\u003c\/strong\u003e and the dust lip faces outward. Check that the seal sits flush or just below the housing face.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-cta\"\u003e\n    🛒 Select your \u003cstrong\u003esize\u003c\/strong\u003e above, then add to cart — ships from our US warehouse.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"Default Title","offer_id":52334389002514,"sku":"YMX4002-KK","price":217.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-02_8b856f10-7752-4a91-9e97-991e77727bb1.jpg?v=1781266778","url":"https:\/\/homediyer.com\/products\/tc-fb-skeleton-oil-seal-nbr-double-lip-rotation-shaft-id-12mm-29mm","provider":"HomeDIYer","version":"1.0","type":"link"}