The metal wound gasket device with outer ring is located in the trapezoidal ring groove on the flange surface. When the butt bolts are tightened, the radial fastening and the left and right trapezoidal grooves are fastened to form a plastic deformation, forming an annular sealing band and the original seal. After the change in pressure, the ring gasket is expanded axially under the action of material pressure. The slope of the gasket and the trapezoidal groove are more post-tight, producing a self-tightening effect.

However, the increase in material pressure of the metal wound gasket with inner ring also deforms the flange and the butt bolt, producing a relative separation between the sealing surfaces and the gasket sealing than a relative landing, therefore, the ring gasket can be considered as semi-self-sealing, sealing data sales hotline metal ring gasket and flange groove is mainly surface contact, compared to the elliptical ring gasket, although not easily dense with the flange groove, but can be applied again, because the cross section consists of straight lines, which are easy to handle.

At the same time, the strength of the metal wound gasket manufacturer's material should be less than the surface of the flange metal ring gasket performance characteristics: heat-resistant, high-pressure resistance, suitable for high-pressure flange; sealing firm, suitable for pressure, temperature shaking; metal ring gasket application areas: pipe flange, tower groove, pressure vessels, high-speed joint surface, high temperature and high pressure valve cover.

Sealing metal ring gaskets in well pipe installations and oil recovery trees in the crude oil and gas industry came from the USA early on. They were used early in the 1920s in the boiler range and then for sealing manhole covers and other windows in autoclaves. Later they received particular attention in the crude oil consumption and refining industries. As the temperature and pressure of steam power installations increased, the use of metal ring gaskets became more widespread.