Part Description: O-Ring; Inner Diameter 5/16 Inch; Outer Diameter 9/16 Inch; Cross Section Size 1/8 Inch; Material Fluorocarbon Rubber (Viton?); Color Brown; Temperature Rating -20 to 400 Deg F; Dash Number AS568-203; Shore Hardness Durometer 75 (Shore A); Applicable Standard ASTM D2000
Part Number: 2-203V75BR
UNSPSC: 31401500
Manufacturer: Cylinder Repair Components, Inc.