84x161x17.8/20.6mm Axle Halfshaft Oil Seal, NBR Bro

High‑quality TC‑type flange axle halfshaft oil seal 84x161x17.8/20.6mm, brown NBR material, OE 3104055A377. Double‑lip with garter spring and reinforced metal flange shell, for truck axle halfshaft sealing, prevent lubricant leakage and block dust, mud and splash‑water. Ready stock and bulk export available for truck repair.

Key specs: 内径 mm: 84 | 外径 mm: 161 | 高度 mm: 17.8/20.6 | 材料牌号: NBR | 规格型号: 84x161x17.8/20.6mm｜OE:3104055A377｜Material:Brown NBR rubber lip + painted carbon‑steel flange shell｜Structure:TC‑type double‑lip flange oil seal with garter spring｜Fit for heavy‑duty truck axle halfshaft repair | 规格型号: 84x161x17.8/20.6mm｜OE:3104055A377｜Material:Brown NBR rubber lip + painted carbon‑steel flange shell｜Structure:TC‑type double‑lip flange oil seal with garter spring｜Fit for heavy‑duty truck axle halfshaft repair

Technical summary

HTML summary for crawlers. PDF/CAD attachments remain authoritative for drawings; download on the interactive product page.

SpecValue
规格型号84x161x17.8/20.6mm｜OE:3104055A377｜Material:Brown NBR rubber lip + painted carbon‑steel flange shell｜Structure:TC‑type double‑lip flange oil seal with garter spring｜Fit for heavy‑duty truck axle halfshaft repair

Pricing: request a quote (B2B / wholesale).

Request a quote · Inquiry · Request a sample

Product details

This aftermarket 84x161x17.8/20.6mm TC‑type flange axle halfshaft oil seal corresponds to OE number 3104055A377. Constructed from brown NBR rubber and reinforced metal flange shell for stable press‑fit installation on heavy‑duty truck halfshaft assembly. Double‑lip structure with garter spring maintains stable radial pressure on rotating halfshaft. It retains axle lubricating grease inside hub housing and stops dust, mud and splash‑water invading axle assembly. Suitable for heavy‑duty truck repair service, auto‑parts wholesalers, repair workshops and overseas bulk procurement. Core functions Grease retention ：Prevent axle hub grease leakage under truck driving vibration and shock load Dust & mud exclusion: Resist sand, mud and splash‑water contamination for poor road conditions Reinforced flange metal shell: Anti‑rust and reliable interference fit for axle housing bore Garter‑spring pre‑load: Consistent sealing performance under frequent vibration and temperature fluctuation

Material and process

Material ：Brown NBR nitrile rubber sealing lip, anti‑rust painted carbon‑steel flange shell, stainless steel garter spring Structure ：TC‑type double‑lip flange 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 flange shell, resist delamination under heavy truck vibration. Precision‑ground sealing lip reduces friction heat and extends service‑life. Anti‑rust painted flange shell adapts to harsh heavy‑duty truck working environment. Brown NBR compound compatible with truck axle hub grease and gear oil. Upgrade option ：FKM fluoro‑rubber version for higher‑temperature working environment.

Application and compatibility

Product Type ：TC‑type flange axle halfshaft oil seal for heavy‑duty truck Key dimension ：ID84mm × OD161mm × dual width84x161x17.8/20.6mm OE reference ：3104055A377 Compatible media ：Truck axle hub grease, differential gear oil. Working conditions: Truck axle halfshaft, withstand heavy load, road vibration, mud and splash‑water. Not suitable for ：Strong corrosive solvents, extreme ultra‑high‑temperature special‑purpose equipment. Fit applications ：Aftermarket replacement seal for heavy‑duty truck axle halfshaft repair. Buyer reminder ：This is aftermarket replacement part. Please verify shaft diameter, housing bore and OE number 3104055A377 before placing order. Mismatch dimension will cause grease leakage after installation.

Selection guide

Selection Tips 1. Confirm dimension ID84mm, OD161mm, dual width84x161x17.8/20.6mm, OE number 3104055A377 and seal type TC flange halfshaft. 2. Standard brown NBR for regular grease environment; select FKM upgrade for high‑temperature scenarios. 3. Inspect halfshaft and axle housing bore before installation; repair shaft wear, rust and burrs. Damaged mating surfaces will lead to early leakage. Installation Steps Preparation Clean axle housing bore and halfshaft surface thoroughly, remove old seal residue, oil dirt and metal burrs. Pre‑lubrication Coat sealing lip and shaft surface with matching axle hub grease. Dry installation is strictly forbidden; dry friction will damage sealing lip. Orientation Confirmation Main sealing lip faces axle grease cavity; dust lip faces outward. Wrong installation direction causes grease leakage and loses dust‑proof function. Vertical Press‑fit Use proper press‑sleeve tool to press flange oil‑seal evenly and vertically. Never strike rubber lip directly to avoid shell deformation and lip tearing. Seating Inspection Ensure flange 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 halfshaft 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 3104055A377 oil seal used for?

84x161x17.8/20.6mm TC flange axle halfshaft oil seal, brown NBR material, aftermarket truck repair replacement part, prevents axle grease leakage and keeps mud and water out.

What are full specifications?

Size: 84x161x17.8/20.6mm; OE:3104055A377; Material:Brown NBR lip + painted carbon‑steel flange shell + garter spring; Working temperature:‑20℃ 120℃; Application:Heavy‑duty truck axle halfshaft repair.

Which vehicle fits OE 3104055A377 oil seal?

This TC‑flange oil seal is aftermarket replacement for heavy‑duty truck axle halfshaft repair, matches OE number 3104055A377.

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.

View interactive page