Part Description: O-Ring; Inner Diameter 7/16 Inch; Outer Diameter 13/16 Inch; Cross Section Size 3/16 Inch; Material Fluorocarbon Rubber (Viton?); Color Brown; Temperature Rating -20 to 400 Deg F; Dash Number AS568-309; Shore Hardness Durometer 75 (Shore A); Applicable Standard ASTM D2000
Part Number: 2-309V75BR
UNSPSC: 31401500
Manufacturer: Cylinder Repair Components, Inc.