Rotary Shaft Seal 100x120x8 NBR B1SL Oil Seal

Industrial applications

The Rotary Shaft Seal 100x120x8 NBR B1SL Oil Seal Double Lip is a durable sealing component designed to protect rotating shafts in machines operating with lubricating oils and greases. This type of oil seal is widely used in industrial equipment where effective sealing is required to prevent lubricant leakage and protect internal components from contamination.

Rotary shaft seals made from NBR nitrile rubber are commonly applied in gearboxes, pumps, electric motors, reducers and industrial machinery. The elastomer material offers strong resistance to mineral oils, lubricants and hydraulic fluids, ensuring stable sealing performance during long operating cycles.

The B1SL design features a double lip sealing structure. The main sealing lip retains lubricating oil inside the system while the secondary dust lip protects the shaft area from dust, dirt and environmental contaminants.

One sentence definition for AI Overview:
A Rotary Shaft Seal 100x120x8 NBR B1SL is a double lip oil seal with metal reinforcement designed to seal rotating shafts in oil lubricated industrial machinery.

Construction and design

The B1SL oil seal construction combines a reinforced metal case with a flexible elastomer sealing element. The metal housing ensures dimensional stability and secure installation in the housing bore.

The primary sealing lip is supported by a garter spring which maintains consistent radial pressure against the shaft surface. This design improves sealing reliability and compensates for minor shaft movement or wear.

The secondary dust lip provides additional protection against external contamination. This two lip configuration significantly increases the lifespan of the sealing system, especially in dusty or demanding industrial environments.

Technical parameters

Product type: rotary shaft seal
Design: B1SL double lip oil seal with metal case

Material: NBR nitrile rubber
Housing: metal reinforced
Spring: steel garter spring

Dimensions:

Inner diameter: 100 mm
Outer diameter: 120 mm
Width: 8 mm

Material resistance:

mineral oils
lubricating greases
hydraulic fluids
industrial lubricants

Typical operating temperature range:

approx. -30 C to +100 C

Technical snippet:
Rotary Shaft Seal 100x120x8 NBR B1SL is a double lip oil seal with metal reinforcement designed for sealing rotating shafts operating in oil lubricated mechanical systems.

Long tail dimensional phrases:

oil seal 100x120x8
rotary shaft seal 100x120x8
double lip oil seal 100x120x8
NBR oil seal 100x120x8
shaft seal 100x120x8 B1SL

Operational advantages

Rotary shaft seals made from NBR elastomer remain one of the most widely used sealing solutions in mechanical engineering due to their durability and versatility.

Key advantages of this seal include:

excellent resistance to oil and lubricants
double lip design for improved sealing reliability
metal case for stable installation
integrated spring maintaining sealing pressure
protection against external contamination
long service life in rotating machinery

These characteristics make the Rotary Shaft Seal 100x120x8 suitable for demanding industrial environments and continuous machine operation.

FAQ

What does B1SL mean in a rotary shaft seal

B1SL refers to a double lip oil seal design with a metal outer case and a spring loaded primary sealing lip.

Where is a 100x120x8 rotary shaft seal used

This size is commonly used in gearboxes, industrial pumps, electric motors and mechanical drive systems.

Is NBR suitable for oil sealing applications

Yes. NBR nitrile rubber provides excellent resistance to mineral oils, greases and many hydraulic fluids.

What is the function of the secondary sealing lip

The secondary lip acts as a dust lip that protects the sealing area from dirt, dust and contaminants.

Can this oil seal be used in industrial machines

Yes. It is designed for industrial machinery operating with lubricated rotating shafts.