A balanced seal without the need for a stepped shaft. The casing of the rotating part protects bellows from abrasion and from the rotation transmission tensions, and the spring from blocking in the event of being contaminated by fibers ant particles. It is recommended for highly viscous or sticky fluids containing fibers or particles, or with fluids that produce a chemical attack on the shaft.
d= 14 ÷ 100mm
t= -15 ÷ +200⁰C