... ; 2.Clear contact surface and easy to replacing Spiral wound gasket : Spiral wound gasket (basic type) is made by superposing, winding ... stainless steel tape and non-metallic filing. It is usually wound by stainless steel, 304,304L,316,316L,321,Ta ... hand holes flange connection parts;Industry: It can be used in petrifaction, machinery, electric power, metallurgy, shipbuilding, medicine, atomic energy, ...