Function and Variety of Types
Mechanical face seals consist of two geometrically identical metal seals and two elastomeric components, which are mounted in two separate housings.
The elastomeric parts as a secondary seal take over the function of the clamping force of the spring, the static seal between the sliding ring and the workholder as well as the torque transmission. One of the two seal rings rotates with the shaft, the counter seal ring is stationary.
The plan lapped contact surfaces of both metal sealing rings are pressed against each other and axially slide on each other.