105x140x12/25mm Cassette Oil Seal OEM 3103045AA3Q, Front Wheel Hub Oil Seal
Model / SKU: 105‑140‑12‑25‑CASSETTE‑NBR‑3103045AA3Q‑STD
Factory‑new cassette‑style front wheel hub oil seal, OEM NO.3103045AA3Q, dimension 105×140×12/25 mm, NBR rubber construction with garter spring. Designed for commercial vehicle front axle hub, retains bearing grease and blocks mud, dust and splash‑water. Premium aftermarket spare part for auto repair, available for wholesale export.
Tags: NBR oil seal, front wheel hub seal, heavy‑duty commercial vehicle, cassette composite seal
Product photos
Key specs: Inner diameter mm: 105 | Outer diameter mm: 140 | Height mm: 12/25 | Material: NBR | specifications: 105x140x12/25mm｜OEM:3103045AA3Q｜Material:NBR rubber + garter spring｜Structure:RWDR‑KASSETTE cassette composite oil seal｜Fit for heavy‑duty commercial vehicle front axle hub | Size: 105x140x12/25mm｜OEM:3103045AA3Q｜Material:NBR rubber + garter spring｜Structure:RWDR‑KASSETTE cassette composite oil seal｜Fit for heavy‑duty commercial vehicle front axle hub
- Inner diameter mm: 105
- Outer diameter mm: 140
- Height mm: 12/25
- Material: NBR
- specifications: 105x140x12/25mm｜OEM:3103045AA3Q｜Material:NBR rubber + garter spring｜Structure:RWDR‑KASSETTE cassette composite oil seal｜Fit for heavy‑duty commercial vehicle front axle hub
- Size: 105x140x12/25mm｜OEM:3103045AA3Q｜Material:NBR rubber + garter spring｜Structure:RWDR‑KASSETTE cassette composite oil seal｜Fit for heavy‑duty commercial vehicle front axle hub
Technical summary
Product specifications. Refer to the approved drawing for dimensional tolerances and installation requirements.
| Spec | Value |
|---|---|
| Size | 105x140x12/25mm｜OEM:3103045AA3Q｜Material:NBR rubber + garter spring｜Structure:RWDR‑KASSETTE cassette composite oil seal｜Fit for heavy‑duty commercial vehicle front axle hub |
Pricing: request a quote (B2B / wholesale).
Product details
This cassette‑type front‑wheel‑hub oil seal OEM#3103045AA3Q is aftermarket replacement part for heavy‑duty commercial vehicle front axle hub. Dimension ID105mm × OD140mm, mounting thickness 12 mm, overall total height 25 mm.
Adopts integrated cassette composite NBR rubber structure with built‑in garter spring. Effectively holds wheel‑hub bearing grease inside hub assembly, prevents grease leakage under road vibration. Blocks mud, sand, dust and splash‑water from invading wheel‑hub bearing chamber. Widely used for vehicle repair workshops, domestic auto‑parts wholesale and cross‑border commercial‑vehicle‑parts export business.
Core functions
- Prevent hub bearing grease leakage under heavy‑load driving vibration
- Isolate hub bearing from mud, grit and splash‑water contamination
- Integrated cassette profile for stable press‑fit installation into hub housing bore
- Reliable sealing performance for long‑distance heavy‑duty transportation
Material and process
- Material：NBR nitrile rubber, garter spring
- Structure：RWDR‑KASSETTE integrated cassette rotary shaft oil seal
- Key properties：Grease resistant, mud‑proof, anti‑vibration, anti‑aging
Working temperature:‑20℃ ~ +120℃
Manufacturing features
One‑piece vulcanized cassette rubber structure, stable performance under chassis bumping vibration.
Precision‑formed sealing lip with garter spring maintains consistent radial pre‑load pressure.
NBR compound compatible with wheel‑hub bearing grease for commercial vehicles.
Upgrade option：FKM fluoro‑rubber variant for higher‑temperature heavy‑load working scenarios.
Application and compatibility
Product Type：Cassette‑type front wheel hub oil seal for heavy‑duty commercial vehicle
Key dimension：ID105mm × OD140mm, mounting thickness12mm, overall height25mm
OEM Part‑Number：3103045AA3Q
Compatible media：Wheel‑hub bearing grease, general chassis lubricants.
Fit application：Heavy‑duty commercial‑vehicle front‑axle wheel‑hub sealing.
Buyer reminder：This is aftermarket replacement spare part for vehicle front‑wheel hub. Please verify shaft dimension, housing bore and cassette seal profile before placing order. Dimension mismatch will result in grease leakage after installation.
Selection guide
Selection Tips
- Confirm dimension ID105mm, OD140mm, mounting thickness12mm, total height25mm, RWDR‑KASSETTE cassette‑type structure and OEM number 3103045AA3Q.
- Standard NBR version for normal hub‑grease environment; select FKM upgrade for high‑temperature heavy‑load working condition.
- Inspect shaft and housing bore before installation; repair shaft wear, corrosion and burrs. Damaged mating surfaces will trigger premature oil‑seal leakage.
Installation Steps
Preparation
Thoroughly clean hub housing bore and shaft surface, remove old seal residue, dirt and metal burrs.
Pre‑lubrication
Coat sealing lip and shaft surface with matched wheel‑hub bearing grease. Dry installation strictly forbidden; dry friction will damage sealing lip quickly.
Orientation Confirmation
Main sealing lip points toward hub bearing grease cavity; dust‑proof side faces toward wheel outer side. Wrong installation direction leads to grease leakage and poor contamination‑resistance.
Vertical Press‑fit
Use dedicated press‑sleeve tool to press cassette oil‑seal evenly and vertically. Never strike rubber body directly to avoid seal deformation and lip tearing.
Seating Inspection
Ensure seal sits fully flush inside housing bore without tilt.
Visual Check
Examine sealing lip for nicks and seal‑body deformation; tiny hidden damage will cause seepage after commissioning.
Rotation Test
Manually rotate hub assembly to confirm smooth rotation without abnormal binding resistance.
Packaging and delivery
- Inner package：Individual anti‑dust poly bag for each piece to protect sealing lip from scratch.
- Outer package：Reinforced export carton.
- Packing quantity：Adjustable per purchase requirement.
- MOQ：Stock items no MOQ, sample order supported.
- Lead‑time：Stock goods ship within 3‑5 working days; custom logo & export‑special‑packaging orders 30‑45 working days.
- Custom options：Custom logo printing available, custom‑order MOQ≥1000 pcs.
Shipping protection: Moisture‑proof, dust‑proof and anti‑collision packing to prevent 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 3103045AA3Q oil seal used for?
3103045AA3Q cassette‑type oil seal 105x140x12/25mm, NBR material, heavy‑duty commercial‑vehicle front‑wheel‑hub replacement seal. It keeps wheel‑hub bearing grease inside and blocks mud and splash‑water for front axle hub assembly.
What are full specifications?
Size:ID105mm × OD140mm, mounting thickness12mm, overall height25mm; OEM NO:3103045AA3Q; Material:NBR rubber + garter spring; Structure:RWDR‑KASSETTE cassette composite seal; Working temperature:‑20℃ ~120℃; Application:Heavy‑duty commercial‑vehicle front‑wheel‑hub sealing.
Which vehicle fits OEM 3103045AA3Q oil seal?
This cassette‑type oil seal is aftermarket replacement for heavy‑duty commercial‑vehicle front‑wheel hub. Please confirm shaft dimension, housing bore and cassette seal profile before purchase.