30x53x8.5 SCJY Power Steering Oil Seal NBR — Steering Gear Rack Shaft Seal
Model / SKU: SCJY-305385-NBR
Factory direct SCJY high pressure power steering oil seal, size 30×53×8.5 mm, NBR rubber with yellow PTFE back-up ring. For automotive power steering rack / steering gear shaft sealing, bulk quantity discounts for auto importers, distributors and MRO buyers.
Tags: 30x53x8.5mm, SCJY power steering oil seal, CNB steering rack seal, NBR high pressure oil seal, power steering gear shaft seal, yellow backup ring oil seal
Product photos
Key specs: Inner diameter mm: 30 | Outer diameter mm: 53 | Height mm: 8.5 | Material: NBR | Material: NBR | Structure: SCJY High Pressure Power Steering Seal | specifications: 30×53×8.5 mm｜With yellow PTFE back-up ring | Material: NBR
- Inner diameter mm: 30
- Outer diameter mm: 53
- Height mm: 8.5
- Material: NBR
- Material: NBR
- Structure: SCJY High Pressure Power Steering Seal
- specifications: 30×53×8.5 mm｜With yellow PTFE back-up ring
- Material: NBR
- Structure: SCJY High Pressure Power Steering Seal
- Size: 30×53×8.5 mm｜With yellow PTFE back-up ring
Technical summary
Product specifications. Refer to the approved drawing for dimensional tolerances and installation requirements.
| Spec | Value |
|---|---|
| Material | NBR |
| Structure | SCJY High Pressure Power Steering Seal |
| Size | 30×53×8.5 mm｜With yellow PTFE back-up ring |
Pricing: request a quote (B2B / wholesale).
MOQ / commerce notes: Bulk discounts available, factory direct sales
Product details
This SCJY type high pressure power steering oil seal dimension 30×53×8.5 mm is widely used for automotive hydraulic power steering rack / steering gear input shaft sealing. It adopts composite lip design with yellow PTFE back-up ring to resist high hydraulic pressure inside steering gear, prevent power steering fluid leakage and block dirt ingress. Factory direct supply with volume discount for wholesale buyers, auto aftermarket distributors and repair shops.
Features & Benefits
SCJY / CNB special composite lip profile designed for power steering high-pressure hydraulic working condition.
Inner yellow PTFE back-up ring improves pressure resistance, avoids lip extrusion under hydraulic load.
NBR nitrile rubber provides good compatibility with conventional power steering fluid, excellent wear and aging resistance.
Stainless steel garter spring maintains stable lip contact pressure to prevent fluid leakage during reciprocating movement.
Precision pressed outer metal shell ensures tight interference fit inside steering gear housing bore.
Aftermarket replacement seal, always verify shaft OD, housing bore ID and installation thickness before purchase.
Custom laser marking, neutral or branded export packaging available; HNBR and FKM material upgrade optional for high temperature applications.
Material & Working Parameter
- Sealing lip：NBR (Nitrile Butadiene Rubber) 85±5 Shore A; outer casing: painted carbon steel; garter spring: stainless steel; back-up ring: yellow PTFE.
Working temperature range: -30°C ~ +120°C for NBR version. - Working pressure：≤12 MPa for power steering hydraulic system.
- Suitable medium：conventional mineral oil based power steering fluid.
Applications & Compatibility
Automotive hydraulic power steering rack and steering gear input / output shaft sealing. Stop power steering fluid leaking out and prevent sand, dust and water entering steering assembly. Confirm shaft diameter, housing bore and groove dimension before ordering.
Selection & Installation
Selection Tips
Check ID 30 mm, OD 53 mm, thickness 8.5 mm, confirm working pressure and steering fluid type before ordering.
Installation Steps
- Clean shaft and housing bore thoroughly, remove burrs, rust and old seal residue.
- Lightly lubricate seal lip with matching power steering hydraulic fluid; dry installation is forbidden.
- Keep seal parallel to housing, press vertically by installation sleeve.
- Apply even pressure only on outer metal shell; never hit rubber lip directly with hammer.
- After fully seated, manually rotate shaft to check no binding or tight friction.
Packaging & Delivery
Neutral PE bag + export carton; quantity per carton adjustable.
Standard lead time:7–15 working days.
Bulk quantity gets volume discount, send RFQ for exact unit price.
Samples available for quality inspection; freight cost confirmed on quotation.
Custom marking / custom material orders require 25–40 working days.
Payment terms, inspection reports and warranty confirmed on quotation.
Send inquiry with size, quantity, destination and vehicle/steering gear model for firm quotation.
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 30x53x8.5 SCJY power steering oil seal used for?
30×53×8.5 SCJY high pressure power steering oil seal is applied on automotive hydraulic power steering rack/steering gear input shaft. It retains power steering hydraulic fluid and prevents dust ingress under high pressure, with yellow PTFE back-up ring for anti-extrusion.
What is the structure and material of SCJY 30x53x8.5 steering rack seal?
Type: SCJY / CNB high pressure composite lip oil seal. Size:30×53×8.5 mm. Main material:NBR rubber, with yellow PTFE back-up ring, carbon steel outer shell and stainless steel garter spring.
What working pressure and temperature for NBR SCJY power steering seal?
NBR version working temp: -30 ~ +120°C, max working pressure ≤12 MPa, compatible with mineral oil based power steering fluid.