Metal octagon gasket

Metal octagonal gasket is a solid metal gasket with octagonal cross-section processed by metal materials, which has radial self tightening sealing effect. Therefore, the metal ring gasket is a gasket and flange trapezoidal groove inside and outside (mainly the outer side) contact, and through the compression to form a seal.

Octagonal metal gasket originated from the United States. It was first used in the field of boilers in the 1920s for sealing manhole covers, autoclaves and other containers. Since then, it has been paid more and more attention in oil production and oil refining industry. With the increase of temperature and pressure of steam power plant, the use of metal ring gasket is more and more extensive. The nominal pressure of metal ring gasket is 2.0 ~ 42.0mpa

Metal octagonal gasket and flange groove match, mainly for face contact. Compared with the oval ring gasket, although it is not easy to close with the flange groove, it can be used again, and because the cross section is composed of straight lines, it is easy to process. The elliptical ring gasket is in line contact with the flange groove, which has good sealing performance, but requires high machining precision, which increases the manufacturing cost and can not be reused.

Features of metal octagonal gasket:

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

2. The seal is durable and reliable;

3. Adapt to the working condition of load frequency variation;

Metal octagonal gasket materials generally have soft iron, SS304, SS316, carbon steel, ss321 and other alloy materials.

For more information about octagonal metal pads, please visit our website or call our sales hotline.