34x56x8.5 SCJY Power Steering Oil Seal NBR Black With Yellow PTFE Backup Ring
Model / SKU: SCJY-345685-NBR
Factory direct SCJY high pressure hydraulic power steering oil seal, size 34×56×8.5 mm, black NBR with yellow PTFE back-up ring. In stock ready shipment for auto steering gear rack shaft sealing, bulk discounts available for importers and MRO buyers.
Tags: 34x56x8.5mm, SCJY power steering oil seal, CNB1W11 steering rack seal, black NBR oil seal, power steering gear seal, yellow PTFE backup ring
Product photos
Key specs: Inner diameter mm: 34 | Outer diameter mm: 56 | Height mm: 8.5 | Material: NBR | Material: NBR | Structure: SCJY | Color: Black | specifications: 34×56×8.5 mm｜CNB1W11 High Pressure Power Steering Seal｜With yellow PTFE back-up ring
- Inner diameter mm: 34
- Outer diameter mm: 56
- Height mm: 8.5
- Material: NBR
- Material: NBR
- Structure: SCJY
- Color: Black
- specifications: 34×56×8.5 mm｜CNB1W11 High Pressure Power Steering Seal｜With yellow PTFE back-up ring
- Material: NBR
- Structure: SCJY
- Color: Black
- Size: 34×56×8.5 mm｜CNB1W11 High Pressure Power Steering Seal｜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 |
| Color | Black |
| Size | 34×56×8.5 mm｜CNB1W11 High Pressure Power Steering Seal｜With yellow PTFE back-up ring |
Pricing: request a quote (B2B / wholesale).
MOQ / commerce notes: In stock, factory direct sales, bulk discount available
Product details
This SCJY (CNB1W11) high pressure power steering oil seal dimension 34×56×8.5 mm is specially designed for automotive hydraulic power steering rack / steering gear shaft. It features composite lip design with built-in yellow PTFE back-up ring, effectively resisting high hydraulic pressure and preventing lip extrusion inside steering gear housing. Black NBR rubber provides stable compatibility with conventional power steering fluid, good wear and aging resistance. Stainless steel garter spring maintains consistent lip contact pressure to stop hydraulic fluid leakage.
Features & Benefits
SCJY composite lip profile optimized for high pressure hydraulic power steering system.
Inner yellow PTFE back-up ring improves anti-extrusion performance under high hydraulic load.
Black NBR rubber offers excellent resistance to power steering fluid, abrasion and thermal aging.
Stainless steel garter spring ensures uniform radial lip pressure during reciprocating rack movement.
Precision pressed outer metal shell guarantees tight interference fit in steering gear bore.
Ready stock for fast delivery, aftermarket replacement seal, verify shaft OD and housing bore before ordering.
Custom laser marking, neutral or branded export packaging available; HNBR and FKM material upgrade for high temperature applications.
Material & Working Parameter
- Sealing body：NBR (Nitrile Butadiene Rubber), black color; garter spring: stainless steel; back-up ring: yellow PTFE; outer casing: painted carbon steel.
Working temperature range: -30°C ~ +120°C for NBR version.
Max working pressure: ≤12 MPa for hydraulic power steering system. - Suitable medium：mineral oil based automotive power steering fluid.
Applications & Compatibility
Used for hydraulic power steering rack shaft sealing. Prevents power steering hydraulic fluid leakage and blocks sand, mud and water entering steering gear assembly. Confirm shaft diameter, housing bore and installation groove dimension before purchase.
Selection & Installation
Selection Tips
Check ID 34 mm, OD 56 mm, thickness 8.5 mm, confirm working pressure and power 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 forbidden.
- Align seal parallel to housing, press vertically with installation sleeve.
- Apply even pressure only on outer metal shell; never strike rubber lip directly.
- After full seating, manually move steering rack to check no binding or abnormal friction.
Packaging & Delivery
Neutral PE bag + export carton; quantity per carton adjustable.
Standard lead time:7–15 working days, in stock ready to ship.
Bulk quantity gets volume discount, send RFQ for exact unit price.
Samples available for quality inspection; freight cost confirmed on quotation.
Custom marking / HNBR/FKM material orders require 25–40 working days.
Payment terms, inspection reports and warranty confirmed on quotation.
Send inquiry with size, quantity, destination and 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 34x56x8.5 SCJY oil seal used for?
34×56×8.5 SCJY / CNB1W11 high pressure oil seal is for automotive hydraulic power steering rack shaft sealing. It retains power steering fluid and prevents dust ingress under high hydraulic pressure, with yellow PTFE anti-extrusion backup ring.
What is the structure and material of SCJY 34x56x8.5 steering seal?
Type: SCJY / CNB1W11 high pressure composite lip power steering oil seal. Size:34×56×8.5 mm. Material: Black NBR rubber, yellow PTFE back-up ring, carbon steel outer shell and stainless steel garter spring.
What pressure and temperature can NBR SCJY 34x56x8.5 handle?
NBR version working temperature: -30 ~ +120°C, max working pressure ≤12 MPa, compatible with mineral oil based power steering fluid.