84x161x17.8/20.6mm Axle Halfshaft Oil Seal OE 3104055A377 NBR

84x161x17.8/20.6mm Axle Halfshaft Oil Seal, NBR Brown, OE 3104055A377, — main photo

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.

Tags: 84x161x17.8/20.6mm oil seal, 3104055A377 axle halfshaft oil seal, truck halfshaft flange seal, brown NBR shaft oil seal, truck repair replacement seal

Product photos

84x161x17.8/20.6mm Axle Halfshaft Oil Seal, NBR Brown, OE 3104055A377, — photo 2 84x161x17.8/20.6mm Axle Halfshaft Oil Seal, NBR Brown, OE 3104055A377, — photo 3 84x161x17.8/20.6mm Axle Halfshaft Oil Seal, NBR Brown, OE 3104055A377, — photo 4

Key specs: Inner diameter mm: 84 | Outer diameter mm: 161 | Height mm: 17.8/20.6 | Material: NBR | Spec & Model: 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 | Spec & Model: 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

  • Inner diameter mm: 84
  • Outer diameter mm: 161
  • Height mm: 17.8/20.6
  • Material: NBR
  • Spec & Model: 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
  • Spec & Model: 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

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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).

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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

There are only competing products—OEM and model—but not your part number. Can we use them as a reference for selection?

Sure. Please include the competing products/OEM model, key dimensions (ID × OD × height, in mm), and operating conditions (medium, temperature, pressure, rotational speed) to the inquiry form, and we will match them with equivalent specs items in our catalog.If dimensions are unavailable, please send model and photos/drawing first, and we will confirm the details. The final model selection will be based on the confirmation of drawing and operating conditions, and the official quotation will be subject to the written quotation order.

Does it support OEM/ODM along with privatization of packaging and tagging?

We support performing OEM/ODM in accordance with drawing/sample, as well as packaging and marking customization within the agreed upon scope.Please provide details on the target market’s compliance requirements and estimated annual volume. During the RFQ phase, we will confirm process feasibility, tooling costs, and mass production cycle time.

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.

What is your MOQ and delivery time?

In‑stock items: no MOQ, delivery within 3‑5 working days. Customized order MOQ:1000 pcs, lead‑time 30‑45 days.

How to avoid gear oil leakage after installation?

Repair worn half‑shaft and housing bore before fitting. Lubricate seal lip before pressing. Install in correct direction with proper sleeve press‑tool, never strike seal directly. Test shaft rotation after assembly. Improper installation is main cause of early leakage.

What is shelf‑life for NBR oil seal?

Shelf life is 24 months when stored in cool, dry, dark and ventilated warehouse, avoid ozone, high temperature and heavy squeezing.

Can I get FKM high‑temperature version for this size?

Yes, FKM material upgrade version is available for higher‑temperature working conditions, please contact us for quotation.

Can you provide export documents for bulk order?

We can provide commercial invoice, packing list and certificate of origin for bulk export shipments to support customs clearance.

Can I mix different oil seals in one order?

Mixed wholesale is supported, you can combine multiple sizes & OE‑number oil seals for one‑stop sourcing.

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