A device which works to join together systems or mechanisms in order to prevent leakage, contain pressure or exclude contamination.
The primary elements of a mechanical used that is used to seal a rotating shaft:
- Seal Faces - one rotating with the shaft and the other stationary with the case.
- Secondary Seals - one seal to seal against the rotating face and the other to seal against the face that is stationary on the case.
- Main body of the Seal - this will transmit the axial force between the seal faces and so load the seals and react any torque between the rotating faces.
There are a number of factors that are important with regards to the seal faces:
- Surface needs to be flat
- Low roughness
- Perpendicular to the shaft rotation
See also: Seal.
Subjects: Mechanical Engineering