U-Cup, Symmetrical Lip, Inside Dia. 0.375 in, Outside Dia. 0.875 in, Seal Material Buna N, Seal Durometer 70 Shore A, Color Black, For Groove Width 0.281 in, For Piston Groove Dia. 0.375 in, Max. Speed 1.5 fps, Max. Pressure 500 psi, Cross Section Shape U, Width 1/4 in, Temp. Range -40 Degrees to 250 Degrees F, For Rod Dia. 3/8 in, Package Quantity 5