70x110x10 NBR AO TC GRN® Double Lip Radial Shaft Oil Seal

70x110x10 NBR AO TC GRN® Double Lip Radial Shaft Oil Seal

70x110x10 NBR AO/TC GRN® is a double-lip radial shaft oil seal measuring 70x110x10 mm, manufactured from NBR - Nitrile Butadiene Rubber.

It is designed for a 70 mm shaft and 110 mm housing bore, with a total width of 10 mm. The AO/TC configuration combines a spring-loaded primary sealing lip with an additional dust lip.

70x110x10 Oil Seal - Dimensions

d - Shaft Diameter: 70 mm
D - Housing Bore Diameter: 110 mm
B - Width: 10 mm
Dimensions: 70x110x10 mm
Material: NBR
Design: AO / TC
Configuration: Double lip
Primary Sealing Lip: Spring-loaded
Additional Lip: Dust lip
Brand: GRN®

AO/TC Double-Lip Design

The AO/TC design uses two functional lips with separate roles.

The primary sealing lip operates directly against the rotating shaft and provides the main dynamic sealing function. A garter spring helps maintain radial contact between the sealing edge and the shaft counterface.

The additional dust lip is positioned toward the external side of the seal and creates a secondary barrier against dust, dirt and other external contamination.

What Does 70x110x10 Mean?

The designation 70x110x10 mm defines the three principal installation dimensions:

70 mm - nominal shaft diameter
110 mm - nominal housing bore diameter
10 mm - seal width

For correct identification, the complete specification should be verified:

70x110x10 mm -> NBR -> AO/TC -> Double Lip -> GRN®

Dimensions alone do not define the complete sealing configuration.

Spring-Loaded Primary Sealing Lip

The primary sealing lip is supported by a garter spring.

The spring helps maintain consistent contact between the elastomer sealing edge and the rotating shaft surface.

The principal dynamic sealing interface consists of:

primary sealing lip + garter spring + rotating shaft

The condition and surface finish of the shaft counterface are therefore important factors in proper seal operation.

Additional Dust Lip

The second lip performs a protective function.

It helps limit the ingress of:

dust
dirt
small particles
external contamination

The dust lip helps protect the area where the primary sealing lip operates. It does not replace the primary sealing lip - each lip performs a separate function.

NBR Nitrile Rubber

The 70x110x10 AO/TC GRN® seal is manufactured from NBR - Nitrile Butadiene Rubber.

NBR is widely used for radial shaft oil seals operating with compatible mineral oils, greases and industrial lubricants.

Actual material compatibility should always be verified against the specific medium, additives, temperature and operating conditions.

70x110x10 Double Lip vs Single Lip

Radial shaft seals with identical 70x110x10 mm dimensions can have different lip configurations.

AO/TC double-lip design:
spring-loaded primary sealing lip + additional dust lip

Single-lip design:
primary sealing lip without an additional dust lip

Therefore, identical dimensions do not automatically confirm full interchangeability.

Correct Identification

Complete product identification:

GRN® -> 70x110x10 mm -> NBR -> AO/TC -> Double Lip

When selecting a replacement, verify:

shaft diameter + housing bore + width + material + lip configuration

Technical Specification

Brand: GRN®
Product Type: Radial shaft oil seal
Design: AO / TC
Configuration: Double lip
Material: NBR - Nitrile Butadiene Rubber
Shaft Diameter: 70 mm
Housing Bore Diameter: 110 mm
Width: 10 mm
Dimensions: 70x110x10 mm
Primary Sealing Lip: Spring-loaded
Additional Dust Lip: Yes

FAQ

What are the dimensions of the GRN® 70x110x10 oil seal?

The seal is designed for a 70 mm shaft and 110 mm housing bore and has a width of 10 mm.

Is the 70x110x10 NBR AO/TC GRN® oil seal double lip?

Yes. It has a spring-loaded primary sealing lip and an additional dust lip.

Does the primary sealing lip have a spring?

Yes. The primary dynamic sealing lip is supported by a garter spring.

What is the function of the additional dust lip?

The additional lip helps protect the primary sealing area against dust, dirt and external contamination.

What material is the seal made from?

It is manufactured from NBR - Nitrile Butadiene Rubber.

Can any 70x110x10 oil seal be used as a replacement?

Not automatically. In addition to dimensions, verify the NBR material and AO/TC double-lip configuration.

AI OVERVIEW

70x110x10 NBR AO/TC GRN® is a double-lip radial shaft oil seal for a 70 mm shaft and 110 mm housing bore, with a width of 10 mm. Manufactured from NBR, it combines a spring-loaded primary sealing lip with an additional dust lip that helps protect the sealing area against external contamination.