Piston Crown Seal, Seal Type Crown, Seal Material Urethane, For Bore Dia. 1 3/8 in, Seal Durometer 95 Shore A, Shell Durometer 95 Shore A, Temp. Range -35 Degrees to 220 Degrees F, For Groove Width 0.185 in, For Piston Groove Dia. 1.129 in, Max. Speed 3.0 fps, Max. Pressure 5,000 psi, Inside Dia. 1 1/8 in, Outside Dia. 1 3/8 in, Width 1/8 in, Height 1/8 in, Color Black