30x48x8.5mm CNB Power Steering Oil Seal NBR Black Auto Parts
Model / SKU: CNB-30-48-8.5-NBR
This aftermarket CNB oil seal 30×48×8.5 mm uses NBR, black color, in stock, bulk discounts available, high-quality auto parts for power steering system.
Tags: 30x48x8.5mm, CNB power steering oil seal, power steering seal, NBR oil seal, auto steering spare parts
Product photos
Technical summary
Product specifications. Refer to the approved drawing for dimensional tolerances and installation requirements.
| Spec | Value |
|---|---|
| Size (mm) | 30x48x8.5 |
| Material | NBR |
| Structure | CNB1W11 |
| Color | Black |
| Size | 30x48x8.5 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 30×48×8.5 mm, made of NBR black rubber with yellow PTFE liner and garter spring, designed for automotive power steering system.
Ready stock available with bulk discounts, high-quality auto spare parts.
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 maintains stable sealing performance against standard automotive power steering hydraulic fluid.
CNB composite lip structure handles cyclic high hydraulic pressure and reduces fluid leakage on steering racks.
Built-in stainless steel garter spring keeps consistent lip contact pressure when pressure fluctuates in the hydraulic circuit.
Secondary dust barrier prevents grit, moisture and road contaminants from entering the steering gear assembly.
Integrated backup ring resists lip overturning under high hydraulic 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 30x48x8.5mm CNB oil seal used for?
This seal is a high pressure power steering oil seal, high quality auto spare parts 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 30×48×8.5 mm, CNB1W11 structure with NBR rubber. No matching OE number found for this exact size; verify dimensions before purchase.
Which vehicle fit this 30x48x8.5 power steering oil seal?
It is widely used for automotive power steering rack 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 30x48x8.5mm oil seal without grease 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.