56x74/78x8/11mm Stepped Double Lip Oil Seal

This aftermarket stepped double lip rotary shaft oil seal 56x74/78x8/11 mm is manufactured from black NBR nitrile rubber with carbon steel casing and built-in garter spring. It is engineered for rotary shaft sealing on automotive drive shafts, transmissions and axle assemblies.

VKEFOT manufactures oil seals, O-rings and custom rubber sealing components in Xingtai, China. Our products export to Europe, North America, Middle East and Southeast Asia. Importers, auto part wholesalers and MRO distributors can send RFQ with size, purchase quantity and destination country for formal quotation.

Features & Benefits

Dual lip construction delivers primary oil retention and secondary dust & mud exclusion for harsh rotary shaft working environments.
Integrated garter spring maintains stable radial contact pressure on the sealing lip during continuous shaft rotation.
Black NBR nitrile rubber offers excellent wear resistance and good compatibility with mineral engine oil and gear lubricants.
The special stepped outer profile 74/78mm OD and stepped height 8/11mm matches vehicle housings requiring two-stage stepped installation geometry.
Metal outer casing provides rigid support for secure press-fit installation inside housing bore.
This seal is an aftermarket replacement part; verify shaft, bore dimensions and working condition before placing your order.

Material & Specification

• Sealing lip：NBR nitrile butadiene rubber, black
• Reinforcement：carbon steel metal casing
• Spring：carbon steel garter spring
  Typical working temperature range for NBR: -30°C to +100°C. Confirm rubber compound grade with RFQ for high-temperature operating applications.
  Compatible fluids: mineral gear oil, engine oil, standard mineral lubricants.
  Not suitable for strong solvents, ketones or concentrated ester oils.

Applications & Compatibility

Designed for rotary shaft sealing on automotive drive shafts, gearboxes, transmissions and vehicle axles.
Commonly used for auto repair and aftermarket replacement projects.
Check shaft diameter and housing bore dimension before purchase to avoid costly size mismatch.

Selection & Installation Guide

Selection Tips

Confirm shaft dimension 56 mm, housing bore 74/78 mm and seal stepped height 8/11 mm. Verify lubricant type before final selection.

Installation Steps

1. Clean shaft and housing bore fully, remove burrs, rust and old seal residue.
2. Lubricate sealing lips and shaft with compatible lubricant; dry installation is not allowed.
3. Press the seal squarely and evenly with proper installation tool, keep perpendicular to bore.
4. Do not strike rubber lip directly, protect seal outer surface from scratches and deformation.
5. Rotate shaft manually after assembly, then run low pressure test and check for oil leakage.

Packaging & Delivery

Each seal packed in neutral polybag, then packed into export cartons, normally 300–600 pcs per carton and adjustable on request.

• Lead Time：7–15 working days for this standard stocked spec. MOQ: Typically 100–5,000 pcs; exact quantity, unit price and lead time confirmed on formal quotation.
  Samples and small trial lots are available for stocked sizes; sample freight cost confirmed on RFQ.
  Send inquiry with dimension in mm, quantity, destination country and working medium for a firm quotation.