Medium duty oil bath seals are intended for use in the hubs of utility trailers, horse trailers, and medium duty service
trucks. There are two styles of medium duty oil bath seals, the ST34 and ST5. Both the ST34 and ST5 oil bath seals
offer a superior performance through the use of innovative technology, such as:
of a labyrinth style dust lip to seal out contaminants.
rubber O.D. and I.D. to provide superior seating and sealing capabilities to the hub and shaft.
of bi-directional hydrodynamic pumping aids on the primary sealing lip to pump oil back into the hub while reducing temperature
and seal wear.
lips so that no additional grease is required during installation. The grease also helps the sealing lip during the initial
break-in period of the seal.