38x51x8.5mm High Pressure Power Steering Oil Seal NBR | Hydraulic Rack Shaft Seal
Model / SKU: PS-385185-NBR
38×51×8.5 mm high pressure NBR oil seal for automotive power steering rack hydraulic systems. Black rubber, ready in stock, bulk discounts for auto spare parts wholesalers and repair shops. Submit RFQ for wholesale pricing.
Tags: 38x51x8.5 power steering oil seal, high pressure power steering rack seal, NBR power steering oil seal, automotive hydraulic steering shaft seal, SCJY power steering oil seal
Product photos
Key specs: Inner diameter mm: 38 | Outer diameter mm: 51 | Height mm: 8.5 | Material: NBR | Material: NBR | Color: Black | Type: High-pressure SCJY power steering rotary shaft oil seal, anti-extrusion reinforced structure | Material: NBR
- Inner diameter mm: 38
- Outer diameter mm: 51
- Height mm: 8.5
- Material: NBR
- Material: NBR
- Color: Black
- Type: High-pressure SCJY power steering rotary shaft oil seal, anti-extrusion reinforced structure
- Material: NBR
- Color: Black
- Type: High-pressure SCJY power steering rotary shaft oil seal, anti-extrusion reinforced structure
- Size: 38×51×8.5 mm
Technical summary
Product specifications. Refer to the approved drawing for dimensional tolerances and installation requirements.
| Spec | Value |
|---|---|
| Material | NBR |
| Color | Black |
| Type | High-pressure SCJY power steering rotary shaft oil seal, anti-extrusion reinforced structure |
| Size | 38×51×8.5 mm |
Pricing: request a quote (B2B / wholesale).
MOQ / commerce notes: In stock, bulk discount available
Product details
This high-pressure NBR oil seal sized 38×51×8.5 mm is engineered for automotive hydraulic power steering rack and pump assemblies. It uses reinforced anti-extrusion structure to withstand power steering hydraulic pressure, retain power steering fluid and prevent dust and contaminants entering the steering gear.
VKEFOT manufactures oil seals, O-rings and custom rubber seals in Xingtai and exports to Europe, North America, Middle East and Southeast Asia.
Features & Benefits
- Reinforced anti-extrusion structure, stable sealing under high hydraulic pressure for power steering
- NBR rubber compound with excellent compatibility with mineral-based power steering fluid
- Black rubber outer shell, good wear resistance under continuous rotary shaft motion
- Built-in garter spring keeps consistent lip contact pressure to stop hydraulic fluid leakage
- Ready stock, perfect for auto repair shops, spare parts wholesalers and MRO replacement
Factory production MOQ typically 100–5000 pcs, bulk discount available. Standard stock lead time runs 7–15 working days.
FKM material upgrade available for higher temperature or special fluid requirements, custom production lead time: 25–40 working days.
Material & Specs
Sealing Lip & Body: NBR (Nitrile Butadiene Rubber), built-in stainless steel garter spring.
Typical NBR working temperature: -30°C ~ +120°C. FKM version can work -20°C ~ +200°C, confirm compound grade in RFQ.
- Compatible media：mineral power steering fluid, petroleum-based hydraulic oils.
Not recommended for synthetic ester or phosphate ester hydraulic fluids.
Applications & Compatibility
Aftermarket replacement shaft seal for automotive power steering rack / power steering pump rotary shaft.
This is aftermarket replacement seal. Verify shaft OD, housing bore dimension and system working pressure before ordering.
Selection & Installation
Selection Tips
- Check dimension：ID 38 mm, OD 51 mm, width 8.5 mm, confirm working hydraulic pressure and fluid type before purchase.
Installation Steps
- Clean shaft and housing bore, remove old seal residue, burrs and rust completely.
- Lightly lubricate sealing lip with matched power steering fluid, dry installation forbidden.
- Keep seal parallel to housing, press evenly on seal outer shell using proper installation tool.
- Do not hit sealing lip directly to avoid lip damage.
- After fitting, test shaft rotation to confirm no binding.
Packaging & Delivery
Neutral PE bag + export carton; quantity per carton adjustable.
Stock items lead time:7–15 working days. Bulk orders enjoy volume discount.
Samples are available for quality inspection; sample freight cost confirmed via RFQ.
Custom logo marking and FKM compound orders take 25–40 working days.
Payment terms, inspection certificates and warranty available upon quotation.
Submit RFQ with dimension, quantity and destination country to get best bulk price.
FAQ
I only have a competitor/OEM part number—can you cross-reference?
Conclusion: 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?
Conclusion: 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?
Conclusion: 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?
Conclusion: 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?
Conclusion: 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?
Conclusion: 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?
Conclusion: 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?
Conclusion: 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?
Conclusion: 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?
Conclusion: 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?
Conclusion: 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?
Conclusion: 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?
Conclusion: 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?
Conclusion: 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?
Conclusion: 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?
Conclusion: 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?
Conclusion: 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 38x51x8.5mm high pressure power steering oil seal used for?
This 38×51×8.5 mm NBR high pressure oil seal fits automotive hydraulic power steering rack or pump rotary shafts. Its reinforced anti-extrusion structure retains power steering fluid and blocks contaminants under hydraulic working pressure.
What pressure can this 38x51x8.5 power steering oil seal handle?
This SCJY style power steering oil seal is specially built for the typical working hydraulic pressure of automotive power steering systems. Please send your maximum working pressure in RFQ for suitability verification.
What temperature range can NBR 38x51x8.5 power steering oil seal withstand?
The NBR version runs continuously from -30°C to +120°C. If your steering system runs at higher temperature, we provide FKM compound upgrade. Confirm working temperature in your RFQ.