Patent ID: 8141880

Claim:
A high pressure sealing apparatus comprising: a top adapter having a substantially circular shape in a plan view, and including a packing receiving recess having an inverted V-shaped section at a bottom wall of the top adapter the bottom wall having an apex defined by an inclination angle defining a packing receiving recess; a bottom adapter having a substantially circular shape in a plan view, and including a packing supporting wall having an inverted V-shaped section at a top wall of the bottom adapter the top wall having an apex defined by an inclination angle; a plurality of packing members each having a substantially circular shape in a plan view and an inverted V-shaped section, and interposed between the top adapter and the bottom adapter the packing members having a top wall with an apex defined by an inclination angle and a bottom wall having an apex defined by an inclination angle; and a plurality of metallic backup rings each having a substantially circular shape in a plan view and an inverted V-shaped section, including a packing receiving part at a bottom wall of the backup ring having an apex defined by an inclination angle defining a packing receiving part, and a top wall with an apex defined by an inclination angle, the backup rings and alternately overlapped with the packing members, wherein the packing members are made of hard synthetic resin, and wherein the inclination angle at the top wall of the packing member is smaller than the inclination angle of the packing receiving recess formed on the bottom wall of the top adapter, and the inclination angle of the packing receiving part formed at the bottom wall of the backup ring, wherein the inclination angle at the bottom wall of the packing member is the same as the inclination angle at the top wall of the backup ring, and the inclination angle at the top wall of the bottom adapter, and wherein deformation allowing gaps formed at the top walls of the packing members become wider as the walls are extended from the contacting apexes.