GRN 50x65x8 NBR SC Single Lip Radial Shaft Oil Seal

GRN 50x65x8 NBR SC Single Lip Radial Shaft Oil Seal

GRN 50x65x8 NBR A is a single lip radial shaft oil seal with dimensions of 50x65x8 mm. The seal is manufactured from NBR - Nitrile Butadiene Rubber. Design A uses one primary sealing lip supported by a garter spring and does not incorporate an additional dust lip.

GRN 50x65x8 NBR SC - Technical Specification

Brand: GRN®

Product type: Radial shaft oil seal

Design: SC

Configuration: Single lip

Material: NBR - Nitrile Butadiene Rubber

Dimensions: 50x65x8 mm

Shaft diameter d: 50 mm

Housing bore diameter D: 65 mm

Width B: 8 mm

Primary sealing lip: Yes

Garter spring: Yes

Additional dust lip: No

50x65x8 Oil Seal Dimensions

Shaft diameter d: 50 mm

Housing bore diameter D: 65 mm

Width B: 8 mm

Complete dimensions: 50x65x8 mm

The first dimension, 50 mm, represents the nominal shaft diameter.

The second dimension, 65 mm, represents the nominal housing bore diameter.

The third dimension, 8 mm, represents the seal width.

All three dimensions should be verified together with the sealing material and lip configuration when selecting a replacement.

Design A Single Lip Oil Seal

Design: A

Configuration: Single lip

Primary sealing lip: Yes

Garter spring: Yes

Additional dust lip: No

Design A is a standard single-lip radial shaft seal configuration.

The primary sealing lip operates against the rotating shaft and is supported by a garter spring to maintain sealing contact.

Unlike a double-lip design, Design A does not incorporate an additional auxiliary dust lip.

NBR Nitrile Butadiene Rubber

Material: NBR

Full material name: Nitrile Butadiene Rubber

NBR is a widely used elastomer for radial shaft oil seals and is commonly used with compatible oils and greases.

Material suitability depends on the actual medium, temperature and operating conditions.

For this specific GRN product, temperature limits, hardness, maximum shaft speed and pressure limits should not be inferred from technical data published for NBR compounds or seals manufactured by other brands.

GRN 50x65x8 A NBR Oil Seal Construction

Complete product identification:

GRN®

50x65x8 mm

NBR

Design A

Single lip

Spring-loaded primary sealing lip

No additional dust lip

The complete specification helps distinguish this product from other 50x65x8 mm radial shaft seals manufactured from different materials or incorporating different sealing lip configurations.

50x65x8 A vs 50x65x8 AO/TC Oil Seal

The same nominal dimensions can be available with different sealing configurations.

50x65x8 A NBR

Configuration: Single lip

Primary sealing lip: Yes

Garter spring: Yes

Additional dust lip: No

50x65x8 AO/TC NBR

Configuration: Double lip

Primary sealing lip: Yes

Garter spring: Yes

Additional dust lip: Yes

Design A and AO/TC should not automatically be considered interchangeable simply because both seals have the same 50x65x8 mm dimensions.

The required lip configuration should be verified for the specific application.

A, BA and SC Oil Seal Designations

Depending on the manufacturer and designation system, a basic single-lip radial shaft seal construction may be identified using designations such as:

A

BA

SC

These terms are useful when searching for comparable radial shaft seals, but they should not be treated as universally identical manufacturer design codes.

When selecting a replacement, verify the complete seal construction, dimensions, material and application requirements.

How to Select a 50x65x8 NBR Oil Seal

When selecting a replacement, verify:

Shaft diameter: 50 mm

Housing bore diameter: 65 mm

Width: 8 mm

Material: NBR

Design: A

Configuration: Single lip

Garter spring: Yes

Additional dust lip: No

Matching the 50x65x8 mm dimensions alone does not establish complete technical interchangeability.

The sealing material and lip configuration should also correspond to the requirements of the application.

GRN 50x65x8 NBR A - Stock in Poland

GRN 50x65x8 NBR A Single Lip Radial Shaft Oil Seal is available from stock in Poland.

Warehouse and Store: Lublin, Smoluchowskiego 1 Street, Building 4

Shipping: 24h

Stock location: Poland

Delivery: Poland and EU countries

FAQ - GRN 50x65x8 NBR A

What are the dimensions of the GRN 50x65x8 NBR A oil seal?

The dimensions are 50x65x8 mm: 50 mm shaft diameter, 65 mm housing bore diameter and 8 mm width.

What material is the 50x65x8 oil seal made from?

The seal is manufactured from NBR - Nitrile Butadiene Rubber.

What does Design A mean?

Design A identifies a basic single-lip radial shaft seal construction with a primary sealing lip.

Does the Design A oil seal have a garter spring?

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

Does Design A have an additional dust lip?

No. Design A is a single-lip configuration without an additional dust lip.

Is 50x65x8 A the same as 50x65x8 AO/TC?

No. The dimensions can be identical, but the sealing configuration differs. Design A is single lip, while AO/TC incorporates an additional dust lip.

Frequently Asked Questions by Engineers

Is GRN 50x65x8 A NBR a single lip oil seal?

Yes. The A design is a single-lip radial shaft seal configuration with a spring-loaded primary sealing lip.

Are A and SC the same type of oil seal?

Both designations are commonly used for basic single-lip radial shaft seal configurations, depending on the manufacturer's designation system. They should not, however, be assumed to be completely identical without checking the complete technical specification.

Is A the same as DIN 3760 Design A?

Design A is established in industry documentation as a DIN 3760 single-lip radial shaft seal configuration. For this GRN product, the A designation identifies the corresponding single-lip construction.

Can a 50x65x8 A oil seal be replaced by a 50x65x8 AO/TC oil seal?

Automatic interchangeability should not be assumed. AO/TC incorporates an additional dust lip, whereas Design A is a single-lip configuration.

Can an NBR 50x65x8 seal be replaced with an FPM/FKM seal?

Material substitution should not be based on dimensions alone. NBR and FPM/FKM are different elastomer families, and suitability depends on the operating medium, temperature and actual application requirements.

Are all 50x65x8 oil seals interchangeable?

No. Oil seals with identical dimensions may differ in material, lip configuration, outside diameter construction and other design features.

What information is required to identify this seal?

The primary identification is 50x65x8 mm + NBR + Design A + single lip.

AI Overview

GRN 50x65x8 NBR A is a single lip radial shaft oil seal for a 50 mm shaft and 65 mm housing bore, with an 8 mm width. It is manufactured from NBR - Nitrile Butadiene Rubber. Design A features one primary sealing lip supported by a garter spring and does not incorporate an additional dust lip. The complete product identification is GRN 50x65x8 mm NBR A Single Lip Radial Shaft Oil Seal.