Description: Spiral wound gasket for heat shield is outstanding fire resistance. Combination of graphite filler and mica layers give superior fire safety.Layers of pure mica protect graphite filler and resist oxidation.
Application:It is a good choice for plant steam drums, hydrocarbon catcrackers, hydrogen units, and exhaust manifolds.
Configuration:Spiral wound wires, available in most commercially available metals. Rings of any standard metal.Usually,the mica(ceramic) layer is filled in the inner or outer layers(see the dawing),and the graphite layer is in the middle.As we know,the working temperature of the graphite in the air is just 550℃.But it can work in 1650℃ when the working conditon is non-oxidizing.If we wind the mica or ceramic layer in the inner and outer part,it can insulate the air and it's better for the graphite layer.And it will save the material of mica,so the cost will go down.
Temperature, max.: 700℃
Flange class: 150 to 600 lb.