204 3/8 Inch X 5/8 Inch X 1/8 Inch 75 Durometer Viton O-Ring- Brown J-style spring nuts clip onto

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204 3/8 Inch X 5/8 Inch X 1/8 Inch 75 Durometer Viton O-Ring- Brown J-style spring nuts clip ontoExcellent mechanical and physical properties. Good resistance to petroleum products low compression set and high temperature resistance. Wide spectrum of chemical compatibility. Good for vacuum service and low gas permeability. Temperature range: 15 to +400F (limited exposures to higher temperatures).