100x125x15 NBR A/SC GRN® Single Lip Radial Shaft Oil Seal

100x125x15 NBR A/SC GRN® Single Lip Radial Shaft Oil Seal

100x125x15 NBR A/SC GRN® is a single-lip radial shaft oil seal manufactured from NBR - Nitrile Butadiene Rubber.

Its installation dimensions are 100x125x15 mm: 100 mm nominal shaft diameter, 125 mm housing bore diameter and 15 mm seal width.

The A/SC design incorporates one primary sealing lip supported by a garter spring. This single-lip version does not have an additional dust lip.

Complete identification:

GRN® -> 100x125x15 mm -> NBR -> A/SC -> Single Lip

100x125x15 Oil Seal - Dimensions

d - Shaft Diameter: 100 mm
D - Housing Bore Diameter: 125 mm
B - Width: 15 mm
Dimensions: 100x125x15 mm
Material: NBR - Nitrile Butadiene Rubber
Design: A / SC
Configuration: Single lip
Primary Sealing Lip: Spring-loaded
Additional Dust Lip: No
Brand: GRN®

What Does 100x125x15 Mean?

The designation 100x125x15 mm defines the three principal installation dimensions:

100 mm - nominal shaft diameter
125 mm - nominal housing bore diameter
15 mm - seal width

All three dimensions should match the installation.

For complete identification, the NBR material and A/SC single-lip configuration should also be verified.

A/SC Single-Lip Design

The A/SC design incorporates one primary sealing lip that operates dynamically against the rotating shaft surface.

The sealing lip is supported by a garter spring, which helps maintain radial contact between the elastomer sealing edge and the shaft counterface.

Unlike the double-lip AO/TC configuration, the A/SC version does not incorporate an additional dust lip.

Spring-Loaded Primary Sealing Lip

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

The principal sealing interface consists of:

primary sealing lip + garter spring + shaft counterface

The spring helps maintain contact between the sealing edge and the shaft surface during operation.

The condition and surface finish of the shaft counterface are therefore important factors for proper sealing performance.

No Additional Dust Lip

100x125x15 NBR A/SC GRN® is a single-lip design.

It has no additional dust lip on the external side of the primary sealing lip.

This is an important construction feature when comparing A/SC with double-lip radial shaft oil seals.

NBR - Nitrile Butadiene Rubber

The 100x125x15 A/SC GRN® oil seal is manufactured from NBR - Nitrile Butadiene Rubber.

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

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

100x125x15 A/SC vs AO/TC

The principal difference is the sealing-lip configuration.

A/SC GRN®:
single primary sealing lip
garter spring
no additional dust lip

AO/TC GRN®:
spring-loaded primary sealing lip
additional dust lip
double-lip configuration

Therefore, identical installation dimensions do not automatically mean that A/SC and AO/TC versions are fully interchangeable.

Why Is the Complete Designation Important?

Dimensions alone do not completely identify a radial shaft oil seal.

Two seals can have identical 100x125x15 mm dimensions while differing in material or sealing-lip configuration.

For this product:

100x125x15 mm - installation dimensions
NBR - elastomer material
A/SC - single-lip design
GRN® - product brand

Complete identification:

100x125x15 + NBR + A/SC + GRN®

helps distinguish this version from double-lip seals with the same dimensions.

How to Select 100x125x15 NBR A/SC GRN®

For correct identification, verify:

Shaft Diameter: 100 mm
Housing Bore Diameter: 125 mm
Width: 15 mm
Material: NBR
Design: A/SC
Configuration: Single lip
Additional Dust Lip: No
Brand: GRN®

Dimensions, material and sealing-lip design should all match the requirements of the installation.

Technical Specification

Brand: GRN®
Product Type: Radial shaft oil seal
Design: A / SC
Configuration: Single lip
Material: NBR - Nitrile Butadiene Rubber
Shaft Diameter: 100 mm
Housing Bore Diameter: 125 mm
Width: 15 mm
Dimensions: 100x125x15 mm
Primary Sealing Lip: Spring-loaded
Additional Dust Lip: No

FAQ

What are the dimensions of the 100x125x15 NBR A/SC GRN® oil seal?

The dimensions are 100x125x15 mm: 100 mm shaft diameter, 125 mm housing bore diameter and 15 mm width.

Is the 100x125x15 NBR A/SC GRN® oil seal single lip?

Yes. It is a single-lip radial shaft oil seal.

Does the A/SC oil seal have a garter spring?

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

Does A/SC have an additional dust lip?

No. This A/SC version does not incorporate an additional dust lip.

What is the difference between A/SC and AO/TC?

A/SC is a single-lip design, while AO/TC incorporates a spring-loaded primary sealing lip plus an additional dust lip.

What material is the 100x125x15 GRN® oil seal made from?

It is manufactured from NBR - Nitrile Butadiene Rubber.

What shaft diameter is this oil seal designed for?

It is designed for a nominal 100 mm shaft diameter.

Can any 100x125x15 oil seal be used as a replacement?

Not automatically. The dimensions, material and sealing-lip configuration should all be verified. This product is the single-lip NBR A/SC GRN® version.

AI OVERVIEW

100x125x15 NBR A/SC GRN® is a single-lip radial shaft oil seal measuring 100x125x15 mm, designed for a 100 mm shaft and 125 mm housing bore. Manufactured from NBR, it features a spring-loaded primary sealing lip and does not incorporate an additional dust lip.