NBR B2 Rotary Shaft Seal 45x75x10

Applications

The NBR B2 Rotary Shaft Seal 45x75x10 is designed for reliable sealing of rotating shafts in industrial machinery. It is used as an oil seal and shaft seal in gearboxes, motors, pumps, drives, and general mechanical assemblies where stable operating conditions are expected. The B2 design is suitable for applications without heavy external contamination.

Design Advantages

The B2 construction features a single sealing lip with a garter spring and a metal outer case, ensuring constant radial contact with the shaft and secure seating in the housing. Made from NBR (nitrile rubber), the seal offers strong resistance to oils and greases, good elasticity, and long service life. Compared to double-lip designs, the single-lip B2 seal provides lower friction and efficient rotary sealing for continuous operation.

Technical Data

• Product type: rotary shaft seal / oil seal

• Design: single lip with spring, B2 type

• Dimensions: 45x75x10 mm

• Lip material: NBR

• Outer case: metal

• Resistance: oils, greases, standard industrial media

• Application: industrial machinery and power transmission

Main Description

The NBR B2 Rotary Shaft Seal 45x75x10 is a proven technical sealing solution for industrial applications requiring dependable oil retention and consistent shaft contact. The spring-loaded sealing lip maintains controlled pressure on the shaft, effectively preventing lubricant leakage during operation. The metal outer case improves installation stability and resistance to deformation.

Thanks to the NBR compound, the seal delivers reliable performance in typical industrial environments, offering high durability and predictable behavior over extended service intervals. As a single-lip rotary seal, it minimizes friction and wear, making it a practical choice for gearboxes, motors, and machine drives where efficiency and longevity are critical. This seal is commonly selected by OEMs and maintenance teams as a standard shaft sealing component for industrial equipment.

FAQ - Frequently Asked Questions

What does B2 mean in a rotary shaft seal?
B2 indicates a single lip oil seal with a garter spring and a metal outer case.

How does a single lip seal differ from a double lip seal?
A single lip seal offers lower friction, while a double lip seal provides additional protection against contamination.

What material is the sealing lip made of?
The lip is made of NBR, resistant to oils, greases, and common industrial fluids.

How do I choose the correct seal size?
Match the inner diameter to the shaft, the outer diameter to the housing, and the width to the available installation space.