Rotary Shaft Seal GRN® 121.8x150x13/12 KASSETTE NBR

Heavy-Duty Cassette Oil Seal for Industrial Applications

Multi-Lip KASSETTE Design and NBR Performance

Technical Dimensions and Installation Parameters

Main Description:
The Rotary Shaft Seal GRN® 121.8x150x13/12 KASSETTE NBR is a reinforced cassette oil seal engineered for demanding industrial and automotive applications. Designed as a complete rotary shaft seal assembly, this technical seal integrates multiple sealing lips and a robust metal structure to ensure reliable oil retention and contamination protection.

With dimensions 121.8 mm inner diameter, 150 mm outer diameter and a construction width of 13/12 mm, this shaft sealing ring is optimized for medium and heavy-duty rotating assemblies. Compared to a standard single lip oil seal (SC) or a double lip oil seal (TC), the KASSETTE design offers advanced protection through a multi-lip configuration that combines oil sealing, dust exclusion and mechanical reinforcement.

Manufactured from high-quality NBR elastomer, this rotary oil seal provides excellent resistance to oils and grease, ensuring high durability under continuous operation. NBR is widely used in hydraulic and automotive seals due to its stable mechanical properties and compatibility with lubricated systems. The precision-engineered lip geometry maintains consistent radial pressure on the shaft, reducing leakage and minimizing wear even in environments exposed to mud, moisture and vibration.

The GRN® cassette shaft seal is commonly applied in drive axles, gearboxes, wheel hubs, construction machinery and other industrial applications requiring reliable rotary sealing. It protects internal components such as bearings and gears from contamination while maintaining lubrication integrity. Proper installation into a dimensionally accurate housing ensures optimal compression and long-term operational stability.

For B2B buyers, this cassette oil seal represents a cost-effective solution for extending equipment lifespan, minimizing downtime and improving sealing performance in heavy-duty environments.

Key search phrases included:
rotary shaft seal 121.8x150x13/12, GRN cassette oil seal, heavy duty shaft sealing ring, NBR cassette seal, industrial rotary oil seal, axle cassette seal.

FAQ

1. What is the difference between a cassette seal and a standard oil seal?
A cassette seal integrates multiple sealing lips and a reinforced structure, offering superior protection compared to single lip (SC) or double lip (TC) oil seals.

2. Is NBR suitable for heavy industrial oil applications?
Yes. NBR provides strong resistance to oils and grease and performs reliably within standard industrial temperature ranges.

3. Where is this cassette shaft seal typically used?
It is commonly installed in drive axles, gear systems, construction equipment and heavy industrial machinery.

4. How do I select the correct rotary shaft seal size?
The first dimension corresponds to shaft diameter, the second to housing bore diameter and the third to construction width.

5. Can this seal handle contamination from water and dirt?
Yes. The multi-lip KASSETTE design offers enhanced protection against dust, mud and moisture.