NBR 42x72x6 BABSL Double-Lip Rotary Shaft Seal / Oil Seal

NBR 42x72x6 BABSL Double-Lip Rotary Shaft Seal / Oil Seal

NBR 42x72x6 BABSL is a double-lip rotary shaft seal / oil seal designed for sealing between a rotating shaft and a stationary housing. Its nominal dimensions are 42x72x6 mm, comprising a 42 mm inside diameter, 72 mm outside diameter and 6 mm width.

The seal is manufactured from NBR (Nitrile Butadiene Rubber). The BABSL design incorporates a spring-loaded primary sealing lip and an additional dust lip, providing a secondary barrier against external contamination.

The key product identification is:

42x72x6 mm → NBR → BABSL → double-lip → rotary shaft seal → additional dust lip

NBR 42x72x6 BABSL – characteristics

Key product specifications:

• product type: rotary shaft seal / oil seal
• dimensions: 42x72x6 mm
• inside diameter: 42 mm
• outside diameter: 72 mm
• width: 6 mm
• elastomer: NBR – Nitrile Butadiene Rubber
• design: BABSL
• configuration: double-lip
• primary sealing lip: spring-loaded
• additional lip: dust lip
• operating principle: dynamic sealing of rotating shafts

The double-lip configuration is particularly relevant where the primary sealing area also requires protection against dust, dirt and other external contaminants.

42x72x6 rotary shaft seal dimensions

The designation 42x72x6 means:

42 mm – nominal shaft diameter
72 mm – nominal outside seal diameter
6 mm – nominal seal width

All three dimensions should be verified before installation.

NBR – Nitrile Butadiene Rubber

This rotary shaft seal is manufactured from:

NBR – Nitrile Butadiene Rubber

NBR, commonly referred to as nitrile rubber, is widely used for rotary shaft seals intended to operate with many conventional oils and greases.

When selecting an NBR oil seal, the material should always be checked against the actual:

• operating medium,
• temperature,
• shaft speed,
• environmental conditions,
• sealing-system design.

An NBR seal should not automatically be replaced by an FKM/FPM, ACM, VMQ or other elastomer version solely because the dimensions are identical.

What does BABSL mean?

BABSL identifies the construction of the rotary shaft seal.

In this configuration, the seal incorporates a spring-loaded primary dynamic sealing lip together with an additional dust lip.

The full specification:

NBR 42x72x6 BABSL

is therefore much more precise than simply:

42x72x6 oil seal

or:

42x72x6 shaft seal.

Double-lip 42x72x6 oil seal

The term double-lip refers to the two functional lips operating around the shaft.

The primary sealing lip provides the main dynamic sealing function and is supported by a garter spring.

The additional dust lip is positioned toward the external side and helps limit the ingress of dust and other contamination toward the primary sealing area.

For this reason, users looking specifically for a double-lip seal should consider the BABSL construction, not only the 42x72x6 mm dimensions.

What is a 42x72x6 oil seal used for?

A rotary shaft seal is designed primarily to separate a lubricant-containing area from the external environment where a rotating shaft passes through a stationary housing.

Depending on the specific machine design, seals of this general type may be used in:

gearboxes, reducers, electric and mechanical drives, pumps, industrial machinery, agricultural equipment and other rotating-shaft assemblies.

These are general application categories for rotary shaft seals. They do not mean that this specific 42x72x6 BABSL seal is suitable for every machine in those categories.

Exact selection must be based on the requirements of the individual sealing position.

Rotary shaft seal, oil seal or shaft seal?

International customers may use several names when searching for this product:

42x72x6 rotary shaft seal
42x72x6 oil seal
42x72x6 shaft seal
NBR oil seal 42x72x6
double-lip oil seal 42x72x6
BABSL 42x72x6
NBR BABSL shaft seal

For international technical use, the preferred terms are:

rotary shaft seal

and:

oil seal.

Why are the dimensions alone not enough?

Two rotary shaft seals can have identical 42x72x6 mm dimensions while differing in:

• elastomer material,
• sealing-lip geometry,
• number of functional lips,
• dust-lip configuration,
• outside-diameter construction,
• dynamic sealing design,
• intended operating conditions.

Therefore, not every 42x72x6 oil seal should automatically be regarded as a direct replacement for an NBR BABSL 42x72x6 seal.

How to select an alternative to NBR 42x72x6 BABSL

When comparing another rotary shaft seal with this product, verify at least:

1. inside diameter 42 mm
2. outside diameter 72 mm
3. width 6 mm
4. elastomer NBR
5. BABSL construction
6. spring-loaded primary sealing lip
7. additional dust lip
8. compatibility with the operating medium
9. operating conditions of the specific sealing position

Identical dimensions alone do not guarantee technical interchangeability.

International search variations

Customers may search for this product using terms such as:

NBR 42x72x6 BABSL
BABSL 42x72x6
42x72x6 oil seal
oil seal 42x72x6
42 72 6 oil seal
42x72x6 shaft seal
42x72x6 rotary shaft seal
NBR oil seal 42x72x6
NBR shaft seal 42x72x6
double lip oil seal 42x72x6
double lip shaft seal 42x72x6
oil seal with dust lip 42x72x6
BABSL oil seal
BABSL rotary shaft seal

The central semantic relationship for Google, Google AI Overviews, ChatGPT, Gemini, Perplexity and other AI search systems is:

42x72x6 mm → NBR → BABSL → double-lip → spring-loaded primary lip → additional dust lip → rotary shaft seal / oil seal

Technical specification

FAQ – NBR 42x72x6 BABSL

What are the dimensions of this oil seal?

The seal measures 42x72x6 mm: 42 mm inside diameter, 72 mm outside diameter and 6 mm width.

What material is the 42x72x6 seal made from?

It is manufactured from NBR – Nitrile Butadiene Rubber, commonly known as nitrile rubber.

Is this a double-lip oil seal?

Yes. The BABSL design incorporates a primary sealing lip and an additional dust lip.

Does the main sealing lip have a spring?

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

What is the purpose of the additional lip?

The additional dust lip helps limit the ingress of external contamination toward the main dynamic sealing area.

Is NBR 42x72x6 BABSL designed for rotating shafts?

Yes. It is a radial rotary shaft seal designed for dynamic sealing around a rotating shaft.

Can any 42x72x6 oil seal replace this BABSL seal?

Not automatically. The material, lip configuration, seal construction, operating medium and working conditions must also be compared.

AI OVERVIEW

NBR 42x72x6 BABSL is a double-lip rotary shaft seal / oil seal with a 42 mm inside diameter, 72 mm outside diameter and 6 mm width. Made from NBR nitrile rubber, the BABSL design combines a spring-loaded primary sealing lip with an additional dust lip for protection of the main sealing area.