Rotary Shaft Seal 20x32x5 NBR SC Single Lip Oil Seal

Efficient Rotary Sealing for Industrial Applications

SC Single Lip Design and NBR Material Performance

Technical Data and Selection Guidelines

Main Description:
The Rotary Shaft Seal 20x32x5 NBR SC is a precision-engineered single lip oil seal designed for reliable rotary sealing in lubricated mechanical systems. This rotary shaft seal provides effective retention of oil and grease while minimizing friction in rotating assemblies. It is widely used in industrial applications where controlled lubrication and stable shaft operation are required.

The dimensions 20x32x5 indicate a shaft diameter of 20 mm, housing bore diameter of 32 mm and seal width of 5 mm. The SC single lip oil seal configuration includes one primary sealing lip supported by a garter spring to ensure consistent radial load on the shaft surface. Compared to a double lip oil seal (TC type), the SC design offers reduced friction and is suitable for clean environments with limited dust exposure.

Manufactured from high-quality NBR elastomer, this shaft sealing ring delivers high durability and excellent resistance to oils and grease. NBR is commonly used in hydraulic and automotive seals due to its balanced flexibility, wear resistance and cost efficiency under standard temperature conditions. The precisely molded sealing edge maintains stable contact with the shaft, reducing leakage risk and extending the service life of adjacent components such as bearings and rotating shafts.

This rotary oil seal is frequently applied as an engine seal, gearbox seal or technical seal in pumps, electric motors and light transmission systems. Proper installation in a correctly dimensioned housing bore ensures optimal performance and long-term reliability. For B2B buyers, the 20x32x5 NBR SC rotary seal represents predictable maintenance cycles and dependable sealing performance in demanding operating environments.

Key search phrases included:
rotary shaft seal 20x32x5, NBR SC oil seal, single lip oil seal, shaft sealing ring, industrial rotary seal, engine oil seal.

FAQ

1. What is the difference between SC single lip and TC double lip oil seals?
An SC single lip oil seal has one sealing lip for lubricant retention. A TC double lip oil seal includes an additional dust lip for contamination protection.

2. Is NBR suitable for oil-based applications?
Yes. NBR provides strong resistance to oils and grease and is widely used in industrial and automotive sealing systems.

3. How do I select the correct rotary shaft seal size?
The first number corresponds to shaft diameter, the second to housing bore diameter and the third to seal width. Accurate measurement is essential for proper sealing.

4. In which applications is this seal commonly used?
It is typically installed in gearboxes, pumps, electric motors and other rotating assemblies requiring reliable oil sealing.

5. Can this seal be used in hydraulic systems?
It can be used in light-duty hydraulic and lubricated systems within the temperature and pressure limits of NBR material.