How to Install Octagonal Ring Joint Gasket
2022-06-03
The Octagonal Ring Joint Gasket is installed in the trapezoidal ring groove on the flange surface. When the connecting bolt is tightened, it is axially compressed and tightly attached to the upper and lower trapezoidal grooves, resulting in plastic deformation, forming an annular sealing band and establishing an initial seal. After boosting, under the action of medium pressure, the ring gasket is radially expanded. The gasket and the inclined surface of the trapezoidal groove are more tightly fitted, resulting in a self-tightening effect. However, the increase of the medium pressure will also deform the flange and the connecting bolt, resulting in the relative separation between the sealing surfaces and the relative decrease in the gasket sealing ratio. Therefore, the ring gasket can be considered as a semi-self-tightening seal.