7x14x5 NBR AO/TC BASL GRN® Double Lip Radial Shaft Oil Seal

7x14x5 NBR AO/TC BASL GRN® Double Lip Radial Shaft Oil Seal

7x14x5 NBR AO/TC BASL GRN® is a compact double-lip radial shaft oil seal measuring 7x14x5 mm, manufactured from NBR - Nitrile Butadiene Rubber.

It is designed for a 7 mm shaft and 14 mm housing bore, with a total width of 5 mm. The double-lip configuration combines a spring-loaded primary sealing lip with an additional dust lip.

7x14x5 Oil Seal - Dimensions

d - Shaft Diameter: 7 mm
D - Housing Bore Diameter: 14 mm
B - Width: 5 mm
Dimensions: 7x14x5 mm
Material: NBR
Design: AO / TC / BASL
Configuration: Double lip
Primary Sealing Lip: Spring-loaded
Additional Lip: Dust lip
Brand: GRN®

What Does 7x14x5 Mean?

The designation 7x14x5 mm defines the three principal installation dimensions:

7 mm - nominal shaft diameter
14 mm - nominal housing bore diameter
5 mm - seal width

For correct identification, the complete specification should be checked:

7x14x5 mm -> NBR -> AO/TC BASL -> Double Lip

Dimensions alone do not define the complete sealing configuration.

AO/TC BASL Double-Lip Design

The AO/TC BASL configuration uses two functional lips.

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 surface.

The additional dust lip forms a secondary barrier on the external side and helps prevent dust, dirt and other contaminants from reaching the primary sealing area.

Spring-Loaded Primary Sealing Lip

The primary sealing lip is supported by a garter spring.

Its function is to help maintain consistent contact between the elastomer sealing edge and the shaft counterface during operation.

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 for 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 protects the area where the primary sealing lip operates but does not replace the primary sealing function.

NBR Nitrile Rubber

The 7x14x5 AO/TC BASL 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.

7x14x5 Double Lip vs Single Lip

Radial shaft seals with identical 7x14x5 mm dimensions can have different lip configurations.

AO/TC BASL 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® -> 7x14x5 mm -> NBR -> AO/TC BASL -> 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 / BASL
Configuration: Double lip
Material: NBR - Nitrile Butadiene Rubber
Shaft Diameter: 7 mm
Housing Bore Diameter: 14 mm
Width: 5 mm
Dimensions: 7x14x5 mm
Primary Sealing Lip: Spring-loaded
Additional Dust Lip: Yes

FAQ

What are the dimensions of the GRN® 7x14x5 oil seal?

The seal is designed for a 7 mm shaft and 14 mm housing bore and has a width of 5 mm.

Is the 7x14x5 NBR AO/TC BASL 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.

Are all 7x14x5 oil seals interchangeable?

No. In addition to the dimensions, the material and lip configuration should be verified. This product is NBR with an AO/TC BASL double-lip design.

AI OVERVIEW

7x14x5 NBR AO/TC BASL GRN® is a compact double-lip radial shaft oil seal for a 7 mm shaft and 14 mm housing bore, with a width of 5 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.