Factory Wholesale High Quality Flat Ring Metal Gasket

DESCRIPTION OF PRODUCTS

This metal ring pad is a solid metal gasket with cross-section octagonal shape made of metal material by forging and heat treatment and machining. It has the function of radial self-tight sealing and is a kind of standard R-type metal ring pad, which is based on the contact between the gasket and the inside and outside of the flange ladder groove (mainly the outer surface), and the sealing effect is formed by compaction. The octagonal metal ring pad is installed in the ladder ring groove of the flange surface. When the connecting bolt is tightened, the axial compression and the upper and lower ladder groove are tight, resulting in plastic deformation, forming a ring seal belt to establish the initial seal. after boosting the pressure, the radial expansion of the ring pad is made under the action of the medium pressure. Gasket and trapezoid groove slope more tight, produce self-tightening effect. However, the increase of the medium pressure will also deform the flange and the connecting bolt, resulting in the relative separation of the sealing surface and the relative decrease of the gasket sealing ratio, so the ring pad can be considered as a semi-self-tight seal. Octagonal metal ring pad and flange groove match is mainly face contact, compared with oval ring pad although not easy to close with flange groove, but can be used again, and because the section is made of straight line easy to process. At the same time choose octagonal metal ring pad material hardness should be lower than flange surface 15~20HB.

PERFORMANCE CHARACTERISTICS

1. High temperature and high pressure resistance, suitable for high pressure flanges;

2, durable and reliable seal;

3. Adapt to working conditions with pressure and temperature fluctuations.

Application range of octagonal metal ring gasket: usually used for high temperature and high pressure steam, gas, solvent pipe flange, tower groove, pressure vessel, high speed joint surface, high temperature and high pressure valve, cover. Wellhead devices and seals on Christmas trees in the oil and gas industry;

Metal ring pads originated in the United States, and were first used in the field of boilers in the 1920s. They were later used to seal manhole covers and other windows of autoclaves. They were particularly valued in the oil production and refining industries. As the temperature and pressure of steam power plants increase, the use of metal ring pads becomes more and more widespread.

STRUCTURE FORM AND CODE