초록 ▼

A shaft seal that is slidably mounted in a housing with essentially equal or balanced forces acting on each radial side. Fluid from the high pressure side of the shaft is communicated to equal areas on the two sides by ducts and constrained to the design areas by “O”rings. The seal moves radially in

A shaft seal that is slidably mounted in a housing with essentially equal or balanced forces acting on each radial side. Fluid from the high pressure side of the shaft is communicated to equal areas on the two sides by ducts and constrained to the design areas by “O”rings. The seal moves radially in response to shaft displacements while maintaining a sealing relationship between packing material and the shaft.

대표청구항 ▼

A sealing device for shafts which pass through a wall, said sealing device including at least one annular housing adapted to be mounted around a shaft, said at least one annular housing including a ring-shaped chamber having disposed therein at least one layer of a sealing material adjacent said sha

A sealing device for shafts which pass through a wall, said sealing device including at least one annular housing adapted to be mounted around a shaft, said at least one annular housing including a ring-shaped chamber having disposed therein at least one layer of a sealing material adjacent said shaft, wherein the improvement comprises: an oversized outer ring disposed radially adjacent said at least one annular housing and adapted to permit sliding of said at least one annular housing radially outwardly from said shaft; at least one antirotation pin extending from the outer ring into said at least one annular housing and adapted to permit radial sliding of said at least one annular housing with respect to said oversized outer ring; and means for balancing frictional forces acting on radial surfaces of said at least one annular housing.