NBR 28x47x8 A Single Lip Radial Shaft Seal

Construction and design

NBR 28x47x8 A is a compact radial shaft seal designed for applications requiring basic oil retention with minimal friction and simplified sealing construction.

The A type design represents a single lip sealing configuration with a primary sealing lip supported by a garter spring. This design ensures efficient lubricant retention while reducing friction and wear on the shaft.

The seal is made from NBR elastomer, offering good resistance to oils, greases and standard industrial fluids. Its slim 8 mm width allows installation in compact assemblies where space is limited.

Industrial applications

NBR 28x47x8 A radial shaft seal is commonly used in small gearboxes, electric motors, pumps and light industrial equipment operating in oil lubricated environments.

The 28x47x8 mm oil seal size is particularly suitable for compact mechanical systems where contamination exposure is limited and simple sealing solutions are sufficient.

Technical specifications

Type: radial shaft seal
Material: NBR
Model: A single lip
Inner diameter: 28 mm
Outer diameter: 47 mm
Width: 8 mm
Design: single sealing lip
Spring: garter spring included
Oil resistance: very good
Temperature range: -30 to +100 C

Operational advantages

NBR 28x47x8 A provides reliable sealing performance with reduced friction compared to double lip designs. The single lip construction minimizes energy losses and improves efficiency in rotating systems.

The compact size ensures easy installation and compatibility with a wide range of industrial applications.

Dimensional compatibility

The 28x47x8 A radial shaft seal is a standard industrial size and can replace equivalent oil seals with matching dimensions and specifications.

Search phrases such as oil seal 28x47x8, NBR shaft seal, single lip seal or radial shaft seal A strengthen its visibility within the shaft seal category.

Main description

NBR 28x47x8 A is a single lip radial shaft seal designed to retain lubricants in low contamination environments while ensuring efficient and stable operation.

The 28x47x8 A oil seal offers reliable sealing performance, reduced friction and long service life in compact industrial machinery.

FAQ

Where is NBR 28x47x8 A used
It is used in small gearboxes, motors and light machinery.

What does A mean
It refers to a single lip sealing design.

Is it suitable for oil applications
Yes, NBR is resistant to oils and greases.

Does it include a spring
Yes, it includes a garter spring for proper sealing.

Is it suitable for dusty environments
It is recommended for low contamination environments.