Sealtek Style 520-521
Mechanical Seals Single Spring
This
seal represents the best alternative where a price/quality factor is critical.
Without a dynamic O-Ring sealing of the shaft, 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 seal independent of shaft rotation.
