Patent ID: 6460858
Filing Date: 2002-10-08
Classification: F16J

Abstract:
A mechanical seal comprising:a rotary ring mounted on a rotary shaft, said rotary ring being rotatable with the rotary shaft, a non-rotary ring mounted in a casing slidably contacting with the rotary ring to form sealing faces, a compression ring having a projection projecting in a radial direction at the outer circumference thereof for fixing the non-rotary ring in the rotating direction and for contacting with said non-rotary ring so as to transfer pressure force toward said rotary ring, a flange having a groove that accepts said projection to stop rotation and to allow an axial movement of said compression ring, said flange having an opening the diameter of which is greater than said compression ring, and a spring contacted at one end with said compression ring and at the other end with said flange for biasing said non-rotary ring toward said rotary ring via said compression ring, and a retainer ring for holding said non-rotary ring installed in said opening.