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. Service Media & Applications: 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 **0?.But it can work in ***0? 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. Specifications: Temperature, max.: **0? Flange
class: **0 to **0 lb
