Incorrect installation direction or shaft chamfer can cause rolling or damage the sealing lip. Shaft installation direction should be considered for triple lip profile types to insure proper lip orientation for dirt exclusion. If the shaft chamfer is less than design specifications (See Shaft Specifications) the chances of rolling back the sealing lip increase. If the assembly area is restricted or there is a blind installation, an alternate seal profile may need to be selected.
Parameters Affecting Sealing: