Washer: A component placed between a connector and a nut, typically a flat metal ring.
Non-metallic Gasket: A gasket made of non-metallic materials such as asbestos, rubber, synthetic resin, and polytetrafluoroethylene. a. Non-metallic Jacket Gasket: A non-metallic gasket with an outer layer of synthetic resin, etc.
Semi-metallic Gasket: A gasket made of both metallic and non-metallic materials, such as spiral wound gaskets and metal-clad gaskets. a. Spiral Wound Gasket: A gasket made by spirally winding a non-metallic strip sandwiched between metal strips with V-shaped or W-shaped cross-sections. 1) Inner Ring: The metal ring located on the inner ring of the spiral wound gasket. 2) Outer Ring: The metal ring located on the outer ring of the spiral wound gasket. b. Metal-clad
Metallic Gasket: A gasket made of metals such as steel, aluminum, copper, nickel, or Monel alloy.
Spiral wound gaskets are gaskets made by winding metal strips (usually V-shaped steel strips) and non-metal strips into a ring. The metal and non-metal strips are wound alternately. Due to their good elasticity, they are widely used in flange sealing structures in industries such as petrochemicals, chemicals, and power. Depending on the specific location, steel rings can be added to the inner or outer layer of the gasket for positioning or reinforcement.
