SKF NBR Seal, 40mm ID, 55mm OD, 8mm

The SKF Radial shaft seals are used between rotating and stationary machine components, or between components in relative motion. It is designed with a metal case, an SKF WAVE lip made of elastomer with higher pumping rate to reduce heat generation, and a garter spring to optimize sealing against the shaft. It features the SKF Bore Tite coating on the outside diameter that helps fill small imperfections in the housing bore.

For oil or grease
WAVE lip has less friction between shaft and lip
WAVE lip has a lower temperature at the contact point
Durable construction enhances lifespan