85x135x8/19.5mm Differential Oil Seal, NBR Black, B

High‑quality TC‑type differential oil seal 85x135x8/19.5mm, black NBR material. Double‑lip with garter spring and reinforced metal shell, for automotive differential sealing, prevent gear‑oil leakage and block dust, mud and splash‑water. Brand‑new, factory direct supply for automotive repair.

Key specs: 内径 mm: 85 | 外径 mm: 135 | 高度 mm: 8/19.5 | 材料牌号: NBR | 规格型号: 85x135x8/19.5mm｜Material:Black NBR rubber lip + painted carbon‑steel shell｜Structure:TC‑type double‑lip seal with garter spring｜Fit for automotive differential repair | 规格型号: 85x135x8/19.5mm｜Material:Black NBR rubber lip + painted carbon‑steel shell｜Structure:TC‑type double‑lip seal with garter spring｜Fit for automotive differential repair

Technical summary

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SpecValue
规格型号85x135x8/19.5mm｜Material:Black NBR rubber lip + painted carbon‑steel shell｜Structure:TC‑type double‑lip seal with garter spring｜Fit for automotive differential repair

Pricing: request a quote (B2B / wholesale).

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Product details

This brand‑new aftermarket 85x135x8/19.5mm TC‑type differential oil seal is made of black NBR rubber and reinforced metal shell for stable press‑fit installation on automotive differential assembly. Double‑lip structure with garter spring maintains stable radial pressure on rotating shaft. It retains differential gear‑oil inside housing and stops dust, mud and splash‑water invading gear assembly. Suitable for auto repair shops, auto‑parts wholesalers and overseas bulk procurement. Core functions Gear‑oil retention: Prevent differential gear‑oil leakage under driving vibration and shock load Dust & mud exclusion: Resist sand, mud and splash‑water contamination for various road conditions Reinforced metal shell: Anti‑rust and reliable interference fit for differential housing bore Garter‑spring pre‑load: Consistent sealing performance under frequent vibration and temperature fluctuation

Material and process

Material ：Black NBR nitrile rubber sealing lip, anti‑rust painted carbon‑steel shell, stainless steel garter spring Structure ：TC‑type double‑lip rotary shaft oil seal Key properties ：Oil‑resistant, dust‑proof, vibration‑resistant, anti‑aging Working temperature:‑20℃ +120℃ Manufacturing features High‑temperature vulcanization bonding between rubber lip and metal shell, resist delamination under vehicle vibration. Precision‑ground sealing lip reduces friction heat and extends service‑life. Anti‑rust painted shell adapts to harsh automotive working environment. Black NBR compound compatible with automotive differential gear‑oil. Upgrade option ：FKM fluoro‑rubber version for higher‑temperature working environment.

Application and compatibility

Product Type ：TC‑type differential oil seal for automobile Key dimension ：ID85mm × OD135mm × dual width8/19.5mm Compatible media ：Automotive differential gear‑oil. Working conditions: Automotive differential shaft, withstand vehicle vibration, mud and splash‑water. Not suitable for ：Strong corrosive solvents, extreme ultra‑high‑temperature special‑purpose equipment. Fit applications ：Aftermarket replacement seal for automotive differential repair. Buyer reminder ：This is aftermarket replacement part. Please verify shaft diameter and housing bore before placing order. Mismatch dimension will cause gear‑oil leakage after installation.

Selection guide

Selection Tips 1. Confirm dimension ID85mm, OD135mm, dual width8/19.5mm and seal type TC differential seal. 2. Standard black NBR for regular gear‑oil environment; select FKM upgrade for high‑temperature scenarios. 3. Inspect shaft and differential housing bore before installation; repair shaft wear, rust and burrs. Damaged mating surfaces will lead to early leakage. Installation Steps Preparation Clean differential housing bore and shaft surface thoroughly, remove old seal residue, oil dirt and metal burrs. Pre‑lubrication Coat sealing lip and shaft surface with matching differential gear‑oil. Dry installation is strictly forbidden; dry friction will damage sealing lip. Orientation Confirmation Main sealing lip faces gear‑oil cavity; dust lip faces outward. Wrong installation direction causes gear‑oil leakage and loses dust‑proof function. Vertical Press‑fit Use proper press‑sleeve tool to press oil‑seal evenly and vertically. Never strike rubber lip directly to avoid shell deformation and lip tearing. Seating Inspection Ensure oil‑seal sits fully flush inside housing bore without tilt. Visual Check Inspect sealing lip for tears and shell deformation. Tiny invisible damage triggers seepage after commissioning. Rotation Test Manually rotate shaft assembly to confirm smooth movement without abnormal binding resistance.

Packaging and delivery

Inner package ：Individual anti‑dust poly bag for each unit to protect sealing lip from scratch. Outer package ：Reinforced export carton. Packing quantity ：Adjustable per order requirement. MOQ ：No MOQ for stock items, sample order acceptable. Lead‑time ：Stock items ship within 3‑5 working days; custom logo and export‑packaging orders 30‑45 working days. Custom options ：Custom logo printing available, custom order MOQ≥1000 pcs. Shipping protection: Moisture‑proof, dust‑proof and compression‑resistant packing to prevent seal deformation during transit.

FAQ

How to submit an RFQ and get a quotation?

1) Open the inquiry page and enter company and contact details. 2) Provide model/size/quantity and duty conditions. 3) Note sample needs (intent=sample) when required. 4) Submit — we typically reply within 24 hours with an actionable quote and lead time. Final price and schedule follow the formal quotation.

What is your typical MOQ? Can you support small trial orders?

We support small trial lots for standard items. Production MOQ depends on tooling, material and process. Submit model/size/qty via the inquiry form for an actionable MOQ and lead time. Final price and schedule follow the formal quotation.

What are lead times for standard vs custom parts?

Stock/standard sizes are faster; custom dimensions, special materials or tooling take longer. Lead time depends on quantity and capacity—confirm via RFQ. Mark urgent needs in the inquiry notes.

I only have a competitor/OEM part number—can you cross-reference?

Yes. Provide the reference PN, key dimensions (ID/OD/height) and duty (media, temperature, pressure). We match equivalents in the catalog; use the Cross Reference page for keyword search. Final selection follows drawing and duty confirmation.

Which sealing materials do you use? How to choose for high temperature or special media?

Common materials include NBR, FKM/FPM, PTFE and silicone—matched to media, temperature and pressure. Share working temperature, media and motion type; we recommend a grade and note limits on the quote.

Do you support OEM/ODM, private packing and marking?

Yes—OEM/ODM from drawings/samples and agreed packing/marking. Share target market compliance needs and volume estimates; we confirm feasibility, tooling and production cadence at RFQ.

Do you export? What trade terms and payment methods are available?

We export to international buyers. Terms and payment (e.g. T/T) are confirmed during RFQ. Note destination port/country and preferred terms; formal contracts and PIs follow mutual confirmation.

What QC is done before shipment? Can you provide test reports?

Pre shipment dimensional/visual checks per order; material certificates or test reports available as agreed by product/lot. Specify document types and standards in the RFQ.

How do I request samples? How are sample and freight fees handled?

Use the inquiry form with sample intent, model/size and ship to address. Sample/freight waivers depend on item and partnership intent—confirmed by sales email. Provide full specs to avoid wrong shipments.

How do you make our business long-term and good relationship?

1.We keep good quality and competitive price to ensure our customers benefit; 2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.

What are the advantages of your company?

We have Impressive Professional Technology, Experienced Technical Staffs, Strict Inspection Procedures, High Quality and Afforable Prices On Time Delivery, Problems identification & Solutions offers. Seal Design Proposal offers. Seals Tests for Endurance and Performance, PPAP Level IIl Submission. Strick Process Control, International Standard Criterias.

What is your terms of payment?

T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.

What is your terms of delivery?

EXW, FOB, CFR, CIF.

How about your delivery time?

Existing molds: 30 days, depending on ordering quantity. New Molds: 60 days, depending on ordering quantity. Samples Submission: 21 28 days with existing toolings.

Can you produce according to the samples?

Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.

Do you test all your goods before delivery?

Yes, we have 100% test before delivery

What is 85x135x8/19.5mm oil seal used for?

85x135x8/19.5mm TC differential oil seal, black NBR material, aftermarket auto repair replacement part, prevents differential gear‑oil leakage and keeps mud and water out.

What are full specifications?

Size: 85x135x8/19.5mm; Material:Black NBR lip + painted carbon‑steel shell + garter spring; Working temperature:‑20℃ 120℃; Application:Automotive differential repair.

Which vehicle fits 85x135x8/19.5mm differential oil seal?

This TC oil seal is aftermarket replacement for universal passenger & commercial vehicle differential repair, please confirm shaft and housing bore dimension before purchase.

Do you support custom logo and export packaging?

Yes, custom logo and export‑oriented packaging are available. Custom MOQ is 1000 pieces with production lead‑time 30‑45 working days.

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