Home > News > Content
The Octagonal Gasket Is Used In Many Industries
- Jun 15, 2018 -

The octagonal gasket is used in many industries. It is one of the metal ring gaskets. Its main material is carbon steel. Its shape can be known without name. It is octagonal and it is suitable for high temperature and high pressure conditions. use. Its characteristics are many, such as performance characteristics, it is the use of a variety of metal materials, can be processed with the relevant machine, and then can be made into different shapes of metal ring gasket, metal ring gasket materials are generally used Carbon steel and some other alloy metals. Metal ring gaskets have high temperature resistance, high pressure resistance, and strong corrosion resistance.

In addition, the octagonal gasket has good sealing performance, and it can maintain its own tightness without being interfered by them under the condition that the temperature changes greatly. The best point is that if the material chosen is appropriate, then the octagonal gasket can work at high temperatures and corrosive conditions. Products such as octagonal gaskets include oval mats, octagonal gaskets, and stainless steel octagonal gaskets, metal octagonal gaskets, and chemical plant-specific octagonal gaskets.

Octagonal gasket installation details

1. The octagonal gasket and the flange sealing surface should be cleaned, and there must be no defects such as scratches or spots that affect the connection sealing performance.

2. The outer diameter of the octagonal gasket should be smaller than that of the flange sealing surface. The inner diameter of the sealing gasket should be slightly larger than the inner diameter of the pipe. The difference between the two inner diameters is generally 2 times the thickness of the gasket to ensure that the gasket is tight after the compression. The inner edge does not extend into the container or pipe so as not to interfere with the flow of fluid in the container or pipe.

3, the sealing gasket pre-tightening force should not exceed the design requirements, so as to avoid over-compression seal gasket loses its ability to rebound.

4, when the gasket is pressed tight, it is best to use a torque wrench. For large bolts and high-strength bolts, hydraulic tensioners are preferred. Tightening torque should be obtained by calculation according to the given sealing gasket compression. The size of the hydraulic pressure of the hydraulic tensioner should also be determined by calculation.

5. When installing the gasket, tighten the nuts in order. However, the design value should not be reached once. Generally, it should be circulated at least 2 or 3 times so that the stress distribution of the gasket can be evenly distributed.

6. For pressure vessels and pipelines with flammable and explosive media, use safety tools when replacing the gaskets to prevent the tools from colliding with the flanges or bolts, resulting in sparks, fire or explosion.

7. If there is a leak in the pipeline, it must be replaced after pressure relief treatment or adjusted installation gasket, pressure operation is strictly prohibited.