초록 ▼

A seal assembly of the mechanical face seal type has features to reduce leakage across the faces. The seal assembly includes a stationary seal ring through which a rotating shaft passes. A rotating seal ring is mounted around the shaft for rotation therewith. A spring urges the rotating seal ring in

A seal assembly of the mechanical face seal type has features to reduce leakage across the faces. The seal assembly includes a stationary seal ring through which a rotating shaft passes. A rotating seal ring is mounted around the shaft for rotation therewith. A spring urges the rotating seal ring into contact with the stationary seal ring. A plurality of concentric, nonintersecting grooves are placed on the face of the stationary seal ring to enhance sealing.

대표청구항 ▼

In a seal assembly for a rotating shaft having an axis and extending through wall structure, the seal assembly having a stationary seal ring with a circular face with a flat surface and carried stationarily by the structure, a rotating seal ring carried by the shaft for rotation therewith and having

In a seal assembly for a rotating shaft having an axis and extending through wall structure, the seal assembly having a stationary seal ring with a circular face with a flat surface and carried stationarily by the structure, a rotating seal ring carried by the shaft for rotation therewith and having a circular face with a flat surface, and spring means for urging the flat surfaces of the faces into engagement with each other, the improvement comprising: at least one circular groove concentric with the axis of the shaft and recessed within the flat surface of the face of the stationary seal, the groove being free of intersections with any cavities in either face to define with the rotating face a closed, annular space.