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Seal and “O” Rings

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Seal and “O” Rings

Material	Temperature Range
“O” Ring, Viton	۵۰^o F to +350^o+F-
Primary Packing, Teflon
“O” Ring, Ethylene Propylene	Steam to +450^oF
Primary Packing, Vespel
“O” Ring, Kalrez or Chemraz	۳۵۰^o F to +500^o+F-
Silicone
Primary Packing, Vespel	In Excess of 500^oF
Primary Packing, Nitronic 60 Do not use “O” rings at these temperatures