Industry News

WHAT ARE SPIRAL WOUND GASKET

2019-10-24
Nowadays, when it comes to spiral wound gaskets, we are not unfamiliar, because spiral wound gaskets are widely used in our daily lives. But for the detailed knowledge of metal wound gaskets, many of us may not be very clear. Let's take a look at the main knowledge of metal wound gaskets.

The spiral wound gaskets with excellent resilience can automatically adjust the pressure thermal cycle and vibration of the pipeline system, especially suitable for occasions where the load is uneven, the joint force is easy to relax, the temperature and pressure are periodically changed, and there is shock or vibration. It is a static sealing original for flange joints such as valves, pumps, heat exchangers, towers, manholes, hand holes, etc. It is widely used in petrochemical, machinery, electric power, metallurgy, shipbuilding, medicine, atomic energy and aerospace.

In order to facilitate the installation of the flange pad design, according to the size of the gasket, 2~8 positioning belts are welded on the periphery of the gasket, so that the positioning belt is fastened on the flange hole to prevent the gasket from shifting or falling off during installation. , saving auxiliary materials and working hours. Generally divided into the following types:

spiral wound gaskets are made of high-quality SUS304, SUS316 ("V" or "W") metal strips and other alloy materials and spirally wound with graphite, asbestos, PTFE gaskets, non-asbestos and other soft materials. In the beginning and end, the metal strip is fixed by spot welding. The spiral wound gaskets is the best resilience gasket in the semi-metal gasket. The structural density of the metal wound gasket can be made according to different locking force requirements, and the inner and outer steel rings are used to control the maximum compression and winding. The surface accuracy of the flange sealing surface of the gasket contact is not high. spiral wound gaskets are especially suitable for applications where load is uneven, joint force is easy to relax, temperature and pressure change periodically, and there is shock or vibration. The wound gasket is a static seal original for the flange connection of valves, pumps, heat exchangers, towers, manholes, hand holes, etc.