The basic type of metal spiral wound gasket is made by winding metal strips together with other strips of graphite fiber and Teflon fiber. Due to its special manufacturing process, it is known as a gasket with good elasticity. As a type of mechanical sealing gasket, metal spiral wound gaskets have gained widespread recognition and are also known as sealing gaskets with good resilience.

Metal spiral wound gaskets are produced through winding, but their materials can vary greatly, ranging from metallic to non-metallic. Pure graphite and metal cannot be easily fused together without additives. Therefore, metal spiral wound gaskets may also be made from a mixture of metallic and non-metallic materials, combining the advantages of both types of materials to a large extent. This explains the wide range of applications for metal spiral wound gaskets. The reason for winding the gasket is to ensure its suitability for the operating environment.

Manufacturers of metal spiral wound gaskets also need to ensure the service life of the wound gaskets. However, it is difficult to achieve this with a single material alone. If the materials cannot be well mixed at the molecular level, the winding method can be used to blend the properties of various materials. For example, a wound gasket made of graphite and steel strip leverages the excellent heat resistance of graphite and the good strength of steel strip.

However, metal spiral wound gaskets solve this problem. When purchasing metal spiral wound gasket products, attention should be paid to the following points: Select the gasket based on operating conditions and the type of flange sealing surface. Choose products from consumer enterprises with a well-established and effective quality certification system, and enterprises that have products for special equipment (pressure piping components), including a manufacturing approval certificate and valid test reports.

The surface of the gasket body should be free of scars, gaps, unevenness, and rust defects that could affect sealing performance. The non-metallic strips on the surface of the gasket body should have an average value slightly higher than that of the metal strips. The solid lines should be clear but should not reveal the metal strips. The spot welding intervals of the metal spiral wound gasket should be average, with no defects such as incomplete fusion or over-fusion. The surface of the reinforcing ring should be free of burrs, unevenness, rust, and other defects.