84x161x17.8/20.6mm Axle Halfshaft Oil Seal, NBR Brown, OE 3104055A377, Truck Repair Replacement Seal
Model / SKU: SKU-20260824-F7B3
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
Key specs: Inner diameter mm: 84 | Outer diameter mm: 161 | Height mm: 17.8/20.6 | Material: NBR | specifications: 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 | Size: 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
- specifications: 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
- Size: 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
Product specifications. Refer to the approved drawing for dimensional tolerances and installation requirements.
| Spec | Value |
|---|---|
| Size | 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).
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
- Confirm dimension ID84mm, OD161mm, dual width84x161x17.8/20.6mm, OE number 3104055A377 and seal type TC flange halfshaft.
- Standard brown NBR for regular grease environment; select FKM upgrade for high‑temperature scenarios.
- 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
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 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.