Sealtek Style 520-521

ELASTOMERIC BELLOWS ROTARY COMPONENT SEAL

This seal represents the best alternative where a price/quality factor is critical.

Without a dynamic O-Ring sealing of the shaf, it guarantees no fretting while the seal’s narrow cross section reduces surface running and allows extra lubrication on the seal faces, prolonging seal life.

The use of a rubber bellows (instead of an =-Ring) provides the highest possible flexibility in absorbing shafts end play and run out, ensures faces remain in contact at all time and makes the the seal independent of shaft rotation.