Radial Shaft Oil Seals

A radial shaft oil seal is a circular housing-mounted seal whose flexible lip runs on a rotating shaft. It retains oil or grease and can exclude external dirt, using a spring-loaded primary lip, an optional dust lip and a case that locates securely in the bore.

Key facts

Family: Rotary & Mechanical Seals
Common types: Single lip without spring, Spring-loaded single lip, Double lip with dust lip, Rubber-covered case, Exposed metal case, Reinforced case
Materials: NBR, FKM (fluoroelastomer), HNBR, Silicone, Carbon steel, Stainless steel
Used in: Gearboxes, Electric motors, Pumps, Vehicle drivetrains, Agricultural machinery, Wheel hubs

Enquire on WhatsApp Email us

Types

Single lip without spring
Spring-loaded single lip
Double lip with dust lip
Rubber-covered case
Exposed metal case
Reinforced case

Materials

Applications

Gearboxes
Electric motors
Pumps
Vehicle drivetrains
Agricultural machinery
Wheel hubs

What to send for a quote

shaft diameter
housing bore
seal width
lip and case style
fluid and rotation details

Questions about radial shaft oil seals

What should I send to identify radial shaft oil seals?

Send shaft diameter, housing bore, seal width, lip and case style, fluid and rotation details. State whether the existing seal is single-lip or double-lip and whether its outside diameter is rubber-covered or bare metal. A clear photograph, drawing or readable reference can resolve details that dimensions alone do not show.

How should I select radial shaft oil seals?

Choose the lip, dust exclusion and case form from lubricant, speed, shaft finish, eccentricity, temperature and external contamination. Confirm the mating parts and operating environment before ordering, since an apparently similar size can use a different profile, material or internal arrangement.

Last updated: 2026-10-08