Leather
Recommended for abrasive applications
Good running properties, due to the impregnated seal lip
Can be used on shafts which have a surface roughness outside the range for rubber seals
Not suitable for water
Oil seals for steel production equipment

• Low-friction torque design
Table 14.1. Fluoroelastomers Used in Oil Aging5


Slowly raise the engine about 11 in. (38 mm) and insert wedges between the mounting rubbers and pads .

Materials used
Most effective sealing is obtained with optimum shaft surface finishes. The sealing efficiency is affected by the direction of the finish tool marks and the spiral lead. Best sealing results are obtained with polished or ground shafts with concentric (no spiral lead) finish marks. If you must use shafts with spiral finish leads, they should lead toward the fluid when the shaft rotates.
