The metal ring gasket is made of metal material composed of forging and heat treatment and machining into a cross-sectional shape of the metal gasket BX entity type, self-tight seal with radial effect, is a special kind of octagonal metal ring pad, its role the principle is the inner and outer ladder between gasket groove (mainly outer surface) of the contact, and by pressing to form a seal.
BX metal ring gasket installed in the ladder ring groove flange when tightening the bolts, subjected to axial compression and up and down the ladder groove tie tight, plastic deformation, forming an annular sealing tape, to establish the initial seal. After the boost, the role of media pressure, so that the ring pad radial expansion. Bevel washer and trapezoidal groove more posts tight, resulting in self-tightening effect. However, the media pressure will rise the same flange and bolts deformation, resulting in a relative separation between the sealing surfaces, the gasket than the relative decline, BX metal ring gasket is belong pressure from the tight ring mat.
Some dimensions of BX-ring pad should pressure through hole penetrating the ring section.
BX metal ring mat Features:
1, high temperature, high pressure, for high-pressure flange;
2, durable and reliable seal;
3, adapt to stress, temperature fluctuations of working conditions;
Applications: Typically used in high temperature high pressure steam, gas, pipe flanges solvent, tower tank, pressure vessels, high-speed joints, high temperature and high pressure valve cover. Oil and gas industry in the wellhead and tree seal
The earliest metal ring gasket from the United States, in the 1920s, the field was first used in the boiler, and later for the manhole cover, other windows sealed autoclave, later in oil production and refining industry is particularly attention. As the temperature and pressure of the steam power plant is increased, the metal ring gaskets are used more widely.