185x208x12mm Oil Seal | Brown NBR Nitrile Rubber Automotive Shaft Seal
Model / SKU: 185-208-12-tc-nbr-std
185×208×12mm oil seal, manufactured with premium grade NBR nitrile rubber and built-in garter spring. Factory direct sales with stable in-stock availability, high-quality aftermarket sealing solution for automotive rotating shaft systems. Features excellent oil resistance, wear resistance and dust-proof performance, direct interchangeable with standard OEM dimensions. Ideal for overseas auto parts distributors, repair workshops, fleet maintenance and cross-border wholesale procurement.
Tags: automotive shaft seal, 185x208mm oil seal, factory direct NBR seal, NBR nitrile rubber seal, aftermarket automotive seal, heavy duty rotary shaft seal
Product photos
Key specs: Inner diameter mm: 185 | Outer diameter mm: 208 | Height mm: 12 | Material: NBR | Size: ID 185mm × OD 208mm × Thickness 12mm | Material: Brown NBR nitrile rubber + Carbon steel garter spring | Structure: TC type double-lip fully rubber-covered skeleton seal | Type: Aftermarket replacement part
- Inner diameter mm: 185
- Outer diameter mm: 208
- Height mm: 12
- Material: NBR
- Size: ID 185mm × OD 208mm × Thickness 12mm
- Material: Brown NBR nitrile rubber + Carbon steel garter spring
- Structure: TC type double-lip fully rubber-covered skeleton seal
- Type: Aftermarket replacement part
- Standard: ISO/TS 16949 compliant
- Application: Automotive chassis & transmission rotating shaft sealing
- Size: ID 185mm × OD 208mm × Thickness 12mm
- Material: Brown NBR nitrile rubber + Carbon steel garter spring
Technical summary
Product specifications. Refer to the approved drawing for dimensional tolerances and installation requirements.
| Spec | Value |
|---|---|
| Size | ID 185mm × OD 208mm × Thickness 12mm |
| Material | Brown NBR nitrile rubber + Carbon steel garter spring |
| Structure | TC type double-lip fully rubber-covered skeleton seal |
| Type | Aftermarket replacement part |
| Standard | ISO/TS 16949 compliant |
| Application | Automotive chassis & transmission rotating shaft sealing |
Pricing: request a quote (B2B / wholesale).
Product details
This 185×208×12mm TC-type oil seal is a factory-direct aftermarket sealing solution designed for automotive rotating shaft systems, serving global distributors, professional repair workshops and fleet operators.
It adopts a fully rubber-covered steel skeleton structure with precision-machined primary sealing lip and secondary dust-proof lip, paired with a built-in high-carbon steel garter spring to maintain stable radial preload even under continuous shaft rotation and road vibration. It effectively retains gear oil, transmission fluid and bearing grease inside the shaft housing, and blocks external road dust, mud, grit and splash water from invading internal components to extend shaft and bearing service life.
Manufactured under ISO/TS 16949 quality management system with strict dimensional tolerance control, it matches standard OEM shaft size specifications and can be directly installed without modification. We maintain sufficient finished goods inventory to support fast delivery and large-volume procurement, serving worldwide automotive aftermarket channels.
Core value for buyers
- Factory direct pricing with no intermediate markup, cost-effective for bulk procurement
- Stable in-stock supply, supports urgent orders and regular scheduled replenishment
- OEM interchangeable dimensions, direct drop-in replacement, reduces maintenance downtime
- Consistent batch quality, matches original equipment sealing performance
Material and process
- Material：Premium grade brown NBR nitrile rubber, carbon steel garter spring, steel reinforcement skeleton
- Structure：TC type double-lip fully rubber-covered rotary shaft skeleton oil seal
- Hardness：70±5 Shore A
- Key performance：Oil resistant, wear resistant, dust-proof, anti-vibration, anti-aging
Working temperature range: -30℃ ~ +120℃
Manufacturing process
Integrated vulcanization molding, firm bonding between rubber and skeleton
Precision grinding of sealing lip edge, uniform contact pressure with shaft surface
Full dimensional inspection for each production batch before shipment
Strict quality control per automotive aftermarket part standards
Upgrade option：FKM fluoro-rubber version available for higher temperature and chemically aggressive working conditions
Application and compatibility
- Product Type：Aftermarket TC-type rotary shaft oil seal for automotive and commercial vehicles
- Core dimensions：ID 185mm × OD 208mm × Thickness 12mm
Compatible fluids: Gear oil, transmission fluid, bearing grease, general chassis lubricants
Fit applications
Automotive chassis rotating shaft sealing
Commercial vehicle transmission shaft sealing
Wheel hub and axle auxiliary shaft sealing
Industrial equipment same-size rotating shaft sealing
Suitable for：Auto parts distributors, professional repair workshops, fleet maintenance centers, cross-border auto parts traders
Buyer notice：This is an aftermarket replacement part, not genuine OEM product. Please confirm shaft diameter, housing bore size and seal thickness before ordering. Dimension mismatch will cause lubricant leakage after installation.
Selection guide
Selection Guide
- Confirm shaft ID 185mm, housing OD 208mm, required thickness 12mm and TC double-lip structure.
- Standard NBR version for normal automotive operating conditions (-30℃~120℃); select FKM upgrade for high-temperature and chemically aggressive environments.
- For long-term procurement projects, contact us for exclusive bulk pricing and dedicated supply schedule.
Installation Steps
Surface Preparation
Thoroughly clean the shaft housing bore and shaft surface, remove old seal residue, dirt, rust and metal burrs.
Pre-lubrication
Apply matching lubricating oil or bearing grease evenly on the sealing lip and shaft mating surface. Dry installation is strictly prohibited as it will cause premature lip wear and failure.
Orientation Confirmation
The main sealing lip faces the lubricant cavity side; the dust-proof lip faces the external environment side. Reverse installation will cause oil leakage and loss of dust protection.
Press-fit Installation
Use a dedicated press sleeve tool to press the seal in evenly and vertically. Never strike the rubber body directly to avoid seal deformation and lip tearing.
Post-installation Check
Ensure the seal sits fully flush inside the housing bore without tilt or offset. Inspect the sealing lip for nicks, scratches and deformation.
Function Test
Manually rotate the shaft assembly to confirm smooth rotation without abnormal binding resistance.
Packaging and delivery
Inner packaging：Each piece individually packed in anti-dust poly bag to protect the sealing lip from scratches and contamination.
Outer packaging：Standard export corrugated carton with shock-proof padding. Custom packaging with private label available.
Packing quantity：Adjustable per bulk order requirements.
MOQ：No minimum order for stock items; sample orders supported for quality evaluation.
Lead time
Stock items：Ship within 2-5 working days after payment
Custom private label / packaging orders: 25-40 working days
Large volume bulk orders: Lead time to be confirmed based on quantity
Custom services：OEM private label printing, custom packaging design, consolidated shipping for mixed SKUs
Shipping terms：EXW, FOB, CIF available
Export documents：Commercial invoice, packing list, certificate of origin, dimensional test report available on request
FAQ
I only have a competitor/OEM part number—can you cross-reference?
Yes. Send the reference PN, ID×OD×height in mm, and duty (media, temperature, pressure, speed). We match equivalents in the catalog; the Cross Reference page also searches by keyword. Final selection follows drawing and duty confirmation — do not order from a photo alone.
Do you support OEM/ODM, private packing and marking?
Yes — OEM/ODM from drawings or samples, plus agreed packing and marking. Share target-market compliance needs and annual volume; RFQ confirms process, tooling cost and cadence. VKEFOT is the export brand of the Xingtai factory, not a trading desk.
TC vs TB oil seal: which should I specify?
For a rotary shaft that needs a dust lip plus oil lip, start with TC (rubber-covered dual-lip is common); TB is typical when a semi-metal case needs a stiffer bore fit. Shaft diameter, housing, runout and dust still decide. Send ID×OD×height in mm and speed on the RFQ — not only a competitor photo.
NBR vs FKM oil seal for hot engine oil?
Continuous engine-oil duty near 120°C or fuel exposure should be reviewed as FKM; general mineral oil at moderate temperature and cost-sensitive repair jobs often stay NBR. Brown color is not proof of FKM. The quote names the grade and temperature limit — do not order by color.
Oil seal vs O-ring: when do I use which?
Use a metal-cased radial shaft (skeleton) oil seal for rotating shafts; use an O-ring for static glands or reciprocating grooves. An O-ring on a rotary shaft wears out quickly. VKEFOT makes both — state motion type (rotary/static/reciprocating) and ID×OD×section on the RFQ.
Cassette seal vs dual-lip TC for dusty construction equipment?
Ag gearboxes and construction travel shafts with mud and long service intervals should be reviewed as cassette/combined seals; many automotive hub repair jobs stay dual-lip TC. Cassette packs are thicker and need different bore and axial space. A job-site photo is not enough — send ID×OD×height.
Xingtai oil seal factory vs trading company — how do I tell?
VKEFOT is the export brand of Xingtai Hanchi Intelligent Technology Co., Ltd. Mixing, vulcanization and outgoing inspection run in Xingtai, then goods export to Europe, North America, the Middle East and Southeast Asia. A trading desk usually cannot change compound or cut tooling. For OEM drawings, ask who runs the process and QC — not only catalog price.
What is a skeleton / radial shaft oil seal?
A skeleton oil seal is a metal-cased radial shaft seal: the rubber lip rides the shaft and the case holds interference in the bore. Common styles include TC, TB and TA. Minimum spec is ID×OD×height in mm, compound and duty. VKEFOT catalogs automotive and industrial shaft seals; trust the product-page dimensions.
What do ID, OD and height mean on an oil seal RFQ?
ID is inside diameter (shaft), OD is outside diameter (bore), height is axial width, all in millimetres. Missing any one blocks a cross-reference. Example: 56×112×8/10 means 56 mm ID, 112 mm OD, 8/10 mm height. Put those three numbers and the compound on the RFQ.
Which oil seal for an automotive wheel hub or differential pinion?
Hub repair jobs often use dual-lip TC; differential pinion shafts often need a secondary lip or split height (e.g. 8/10 or 12/22 mm). Use measured or OEM dimensions — not a marketplace title. VKEFOT application pages cover drivetrains and hubs; send an OEM number or ID×OD×height on the RFQ.
How to select oil seals for ag gearbox and PTO shafts?
Ag gearboxes and PTO shafts see dust and shock — prefer a dust lip or cassette, with NBR or FKM matched to gear oil and temperature. Do not force a passenger-car hub seal onto a PTO shaft. Send shaft, bore, height and whether mud/water is present, then RFQ.
What matters for pump, valve and compressor shaft seals?
Match media (oil, water, gas) and temperature first, then lip style and compound; do not default to cheap NBR for high speed or dry running. Put shaft runout and eccentricity on the RFQ. VKEFOT application cases include pumps, valves and compressors — still use measured sizes.
Does a brown oil seal mean it is FKM?
No. Brown NBR is common; color is not proof of FKM. For heat or fuel duty, write temperature and media on the RFQ so the factory names the grade. Ordering by color is a frequent cause of early leak.
Can you quote an oil seal from a photo only?
Not as a firm quote. We need at least ID×OD×height in mm, ideally compound and speed. A photo can show lip count and case style; it does not replace dimensions. Incomplete RFQs get a request for those three numbers before price.
If a new oil seal leaks quickly, is it always a bad seal?
Not always. Rough shaft finish, runout, cocked installation or the wrong compound also leak early. Check size and media/temperature match before blaming the part, then inspect the journal. Note time-to-fail (e.g. 50 hours) on the RFQ so we diagnose — do not just buy a cheaper seal.
What is needed for private-label OEM packing of oil seals?
Private packing and marking need annual volume, target-market compliance and artwork; tooling cost and cadence are confirmed on the RFQ — not a one-line “please OEM”. VKEFOT runs OEM/ODM after drawings or samples are complete.
Who is VKEFOT and how does it relate to Xingtai Hanchi?
VKEFOT manufactures oil seals, O-rings and custom rubber seals in Xingtai and exports to Europe, North America, Middle East and Southeast Asia. The manufacturer is Xingtai Hanchi Intelligent Technology Co., Ltd. Use this wording on quotes and certificates — do not invent alternate spellings of the brand.
What is 185x208x12mm oil seal used for?
It is widely used for automotive chassis and transmission rotating shaft sealing, retaining gear oil and bearing grease while blocking external dust, mud and splash water.
What material is this automotive shaft seal made of?
Made of premium grade brown NBR nitrile rubber with carbon steel garter spring and steel skeleton, hardness 70 Shore A, working temperature -30℃ to +120℃.
Is this seal interchangeable with standard OEM shaft size?
Yes, it is manufactured to standard OEM dimensions with strict tolerance control, direct drop-in replacement without modification.