Saturday, 11 June 2016

SEALS: GASKETS: METALLIC & NON METALLIC

Non-metallic gaskets:

      Asbestos products :
            White / Blue asbestos
      Rubber:
            Natural, Synthetic, Buna-N, Buna-S, Neoprene, Viton, Teflon
      Cork
      Grafoil
      Asbestos-free gaskets

Metallic gaskets:

      Pure metal
      Corrugated or embossed thin metal
      Metal jacketed, soft filler
      Spiral wound
      If Temperature (˚F) x Pressure (psi) exceeds the value of 250000, metallic gaskets are used.
      Non-metallic gaskets are not considered above 850 ˚F.


Corrugated gaskets: 



Spiral wound gaskets: