These are some of the reasons why more than 80% of the bearing isolator market chooses Inpro/Seal. The Inpro/Seal bearing isolator is a two part dynamic seal consisting of a stator, press-fitted into the bearing housing, and a rotor, attached to the shaft. The rotor and stator form a non-contacting compound labyrinth, so there is nothing to wear out. It protects in two ways: bearing lubricant is captured in the inner portion of the labyrinth and flows back to the bearing housing; outside contamination attempting to enter the bearing housing is captured in the outer labyrinth paths and expelled through a port, in the stator, by centrifugal force and gravity. Simply put, the two components interact to keep contamination out of the bearing enclosure and the lubrication in.
Bearing Isolators install easily on virtually any shaft. There's even a split seal for large shafts to simplify installation.
Inpro/Seals are widely applied in many different applications. Direct yourself to the applications page for some of the more common ones.