30x48x8mm CNB Power Steering Oil Seal NBR
Model / SKU: CNB-30-48-8-NBR
This aftermarket CNB oil seal 30×48×8 mm adopts NBR material, high pressure resistant, high-quality power steering oil seal suitable for auto sealing.
Tags: 30x48x8mm, CNB power steering oil seal, high pressure steering seal, NBR oil seal, automotive power steering seal
Product photos
Technical summary
Product specifications. Refer to the approved drawing for dimensional tolerances and installation requirements.
| Spec | Value |
|---|---|
| Size (mm) | 30x48x8 |
| Material | NBR |
| Structure | CNB1W11 |
| Inner Liner | Green PTFE |
| Size | 30x48x8 mm |
Pricing: request a quote (B2B / wholesale).
MOQ / commerce notes: In stock: ships in 1 to 2 days | Not in stock but still in current production: 10 to 15 days | Not in stock and not in production: 25 to 30 days
Product details
This is an aftermarket CNB high-pressure power steering oil seal with dimensions 30×48×8 mm, made of NBR rubber with green PTFE composite liner, specially designed for automotive power steering hydraulic sealing.
High pressure resistant, high performance for auto steering system sealing applications.
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
NBR nitrile rubber delivers stable sealing performance against conventional automotive power steering hydraulic fluid.
CNB multi-layer composite lip structure withstands fluctuating high hydraulic pressure and minimizes fluid leakage of steering racks.
Built-in garter spring maintains consistent lip contact pressure under varying working pressure.
Dust barrier layer blocks sand, moisture and road contaminants entering steering gear assembly.
Integrated backup ring prevents lip overturning under high pressure during steering operation.
Verify shaft and bore dimensions before order; this item is aftermarket replacement and not genuine OEM component.
FKM or HNBR compound upgrade is available for higher temperature or aggressive fluid media upon request.
OEM marking and neutral export carton packing can be arranged for bulk shipments.
Packaging & Delivery
Samples and small trial lots for stocked sizes; freight confirmed on RFQ.
Payment, test reports and warranty confirmed on quotation / as agreed by lot.
Send an inquiry with size (ID×OD×height in mm), quantity, destination and duty for a firm lead time.
FAQ
What is this 30x48x8mm CNB oil seal used for?
This seal is a high pressure power steering oil seal, high quality sealing part for automotive power steering system, designed to retain hydraulic fluid and block external contaminants.
What are the OE numbers and full specifications for this seal?
Dimensions are 30×48×8 mm, CNB1W11 structure with NBR rubber and green PTFE liner. No matching OE number found for this exact size; verify dimensions before purchase.
Which vehicle fit this 30x48x8 power steering oil seal?
It is widely used for automotive power steering rack sealing repair. Verify shaft and bore dimensions before order.
Is this CNB oil seal a genuine OEM part?
No — it is an aftermarket replacement seal; verify size before order.
How to install 30x48x8mm oil seal without leakage?
1. Clean shaft and housing, remove burrs and old seal debris. 2. Lubricate seal lip and shaft surface, dry installation is forbidden. 3. Align seal with spring side toward hydraulic fluid chamber, press vertically with a sleeve. 4. Apply pressure only on metal shell, never hit rubber lip. 5. Seat fully then rotate shaft manually to check free movement.
What dimensions should I send for an RFQ on this CNB oil seal?
Submit ID×OD×height in mm, quantity, destination and duty for quotation.