Used on 6640-01-547-1760. 16.0mm center hole diameter hydrolic gasket ring drawing calls for material as metal with nbr but doesn't state type of metal. circular
Used on 5895-01-564-7999;tracking system,electro-optical. seal, nonmetallic s i.d: 0.065 inch ; green fluorosilicon; duro 70; 870 psi min tensile strength