Always ensure the housing bore is clean, chamfered, and lightly lubricated before installation. Ensure your shaft is free of burrs or scratches that could tear the rubber.
The primary lip retains the fluid, while the dust lip protects the system against external dust, dirt, and moisture. Type B (Metal Outer Diameter) din 3760 pdf
The standard is detailed and methodical, providing engineers with clear guidelines for seal dimensions, production, and quality assurance. Always ensure the housing bore is clean, chamfered,
DIN 3760 - A - 40 x 62 x 8 - NBR