Spiral-wound gasket
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Metal spiral wound gasket
Metal wound gasket is a kind of sealing gasket widely used, which is the best resilient gasket in semi-metallic sealing gasket, and the winding gasket is made of high-quality SUS304, SUS316 "V" shaped or "W" shaped metal strip and other alloy materials and soft materials such as graphite, asbestos, PTFE, non-asbestos and other soft materials alternately overlapping and spirally wound with each other.
BARD seal spiral wound gaskets are precision-engineered solutions for flange joints, heat exchangers, boiler hand holes, manholes and other high-temperature, high-pressure applications that are resistant to virtually all known corrosive and toxic elements.
The basic metal winding pad is usually made of high-quality SUS304, SUS316 ("V" or "W" shape) and other stainless steel winding tape and graphite, asbestos, PTFE, asbestos-free and other soft materials alternately overlapping and spiral winding, and the metal strip is fixed by spot welding at the beginning and end, and the basic metal winding gasket does not have inner and outer rings. The "V" construction allows the gasket to act as a spring and is carefully controlled to give the sealing element optimal compression and rebound characteristics.
Application Industry:
Spiral wound gasket compression performance, good resilience performance, with multi-channel sealing and a certain self-tightening function, not too sensitive to the surface defects of the flange pressing surface, non-bonding flange sealing surface, can partially eliminate the pressure. the effects of temperature changes and mechanical vibrations; Can be at high temperatures. Microtherm. High vacuum. Under various harsh conditions such as shock and vibration, it maintains its excellent sealing performance
Application Industry:
Petroleum, chemical, metallurgy, electric power, shipbuilding, gas, nuclear energy, aerospace, textile, pharmaceutical, machinery and other industries of pipes, valves, pressure vessels, condensers, heat exchangers, towers, manholes, hand holes and other flange connections static sealing parts.
With inner ring type
According to the requirements of the standard, the metal winding belt is fixed on the inner ring first, and then the metal winding belt is continuously alternately overlapped and spirally wound with graphite, asbestos, PTFE, asbestos-free and other non-metallic winding belts, and the metal strip is fixed by spot welding at the end.
Performance characteristics:
The type with inner ring uses the control of the inner ring to maximize the compression of the gasket, and the surface accuracy of the flange sealing surface in contact with the wound gasket is not high. Metal spiral wound gaskets are especially suitable for occasions where the load is uneven, the bonding force is easy to relax, the temperature and pressure change periodically, and there is shock or vibration. It is generally used in the tenon and groove surface of medium and low pressure and the flange of flat or concave and convex surface.
Industries:
Sealing of flange connections such as pipelines, valves, pressure vessels, condensers, heat exchangers, towers, manholes, and hand holes in petroleum, chemical, metallurgy, electric power, shipbuilding, machinery and other industries.
A metal outer ring is added to the outside of the basic metal winding gasket for the alignment between the flange and the gasket and the control of the gasket pressing force, the outer ring is also called the middle ring, and the carbon steel material of galvanized or sprayed plastic is generally used abroad or the same material of pipe or flange.
Performance characteristics:
Due to the existence of the outer ring is easy to center, it is convenient to disassemble and assemble, and the outer ring is used to control its maximum compression, with the outer ring winding gasket compression performance, good resilience performance, with multi-channel sealing and a certain self-tightening function, it is not too sensitive to the surface defects of the flange pressing surface, and the flange sealing surface is not bonded, which can partially eliminate the pressure. the effects of temperature changes and mechanical vibrations; Can be at high temperatures. Microtherm. High vacuum. Under various harsh conditions such as shock and vibration, it maintains its excellent sealing performance. Metal spiral wound gaskets with outer rings are generally used in flat and convex flanges at low to medium pressures.
Industries:
Sealing of flange connections such as pipelines, valves, pressure vessels, condensers, heat exchangers, towers, manholes, and hand holes in petroleum, chemical, metallurgy, electric power, shipbuilding, machinery and other industries.
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Main technical parameters of various non-metallic materials of spiral wound gasket:
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Sealpilot has a complete database, which can provide you with a variety of standard gaskets, such as national standard, European standard, American standard, Japanese standard, etc., and can also manufacture a special product according to customer requirements
Among the wide range of gaskets in the Sealpilot® product range, you can find the perfect material for your needs. Find out why Sealpilot GSAKETS is a global supplier of custom gaskets for the global industry. Request a quote or call 13372542810 contact us to speak with a custom gasket expert today.
Basic
With outer ring type
With inner and outer ring type
At present, a kind of sealing gasket is widely used, which is a gasket with excellent resilience in semi-metallic sealing gasket, which is made of V-shaped or W-shaped thin steel belt and various fillers such as graphite, PTFE, etc. By changing the material combination of gaskets, the problem of chemical corrosion of gaskets by various media can be solved. In order to strengthen the main body and accurately position, the form of metal inner reinforcing ring and outer positioning ring is adopted, and the inner and outer rings are used to control its maximum compression, play the role of strengthening and avoid the loose ring of the basic body, and the gasket is more convenient to install because of the existence of the outer ring.
Performance characteristics:
It can withstand high temperature, high pressure and adapt to the conditions of ultra-low temperature or vacuum, and the surface accuracy of the flange sealing surface in contact with the gasket is not high, and it is convenient to disassemble and assemble
Application Industry:
Sealing of flange connections such as pipelines, valves, pressure vessels, condensers, heat exchangers, towers, manholes, and hand holes in petroleum, chemical, metallurgy, electric power, shipbuilding, machinery and other industries.
