带外环缠绕垫片

Metal spiral wound gasket

Using high quality SUS304, SUS316, C276, Monel, titanium, zirconium and other ("V" or "W" shape) metal belt and other alloy materials with graphite, asbestos, PTFE, non asbestos and other soft materials are alternately overlapped twisted and, at the beginning and end with spot welding of metal belt fixed. Gasket for semi metallic gasket recovery best gaskets winding metal, metal winding gasket structure density can according to different requirements to lock force, and using internal and external steel ring to control its biggest compaction degree is not high, surface of the flange sealing surface accuracy of spiral wound gasket contact. The metal winding gasket is especially suitable for the occasions where the load is not uniform, the joint force is easy to relax, the temperature and the pressure are periodically changed, there is shock or vibration. The gasket is flanged valves, pumps, heat exchangers, towers, manhole, hand hole and connecting static sealing the original ideal.

Metal winding gasket in four forms:

 Outer ring or outer ring material is solid metal, its role is: to help the installation of the sealing element in the middle; to prevent excessive compression of the sealing element and damage; to prevent the gasket blow out and reduce the flange rotation, etc.. The outer ring is not in contact with the sealing medium, so don't ask for the medium corrosion, so it is often made of carbon steel..

In the inner ring or inner ring, the material should be able to resist the corrosion of the sealing medium. The inner reinforcing ring is to prevent the gap between the sealing element and the container or the pipe flange so as to avoid the interference of the flow of the gap and the flow of the fluid caused by the fluid to the gasket.

As the ordinary graphite at high temperature under the conditions of the time will be the extension of oxidation occurs, so that the gasket sealing effect to reduce until failure. Our another high temperature type spiral wound gasket, non-metallic filler alloy part adopts inorganic adhesive mica, this material is characteristic in high temperature conditions will not be completely oxidized by oxidizing medium, low adhesive components to ensure the quality of this product is better at high temperature keeping performance and load holding performance. In the high temperature condition of 800 -1000 c c c, it has achieved good sealing effect. The non metal filler through the API607 fire test.

Excellent resilience metal winding gasket pressure thermal cycling and vibration of the piping system is automatically adjusted, especially suitable for uneven load, easy adhesion relaxation, occasions of temperature and pressure changes periodically, impact or vibration. Is the original static sealing flange, valves, pumps, heat exchangers, towers, handholes, etc., are widely used in petrochemical, machinery, electric power, metallurgy, shipbuilding, medicine, atomic energy and space sectors.

Specification range:

Nominal pressure (MPa): 25

Nominal diameter (mm): 15-3000

Thickness (mm): 4.5 6.5 3.2

According to HG, SH, JB, JB/T, SHJ, SYJ, DIN, API, ANSI, JIS, JPS and other standards of production, and according to customer requirements for the production of special specifications of the gasket.

Texture of material