U-Cup, Symmetrical Lip, Inside Dia. 1.875 in, Outside Dia. 2.5 in, Seal Material Buna N, Seal Durometer 70 Shore A, Color Black, For Groove Width 0.343 in, For Piston Groove Dia. 1.875 in, Max. Speed 1.5 fps, Max. Pressure 500 psi, Cross Section Shape U, Width 5/16 in, Temp. Range -40 Degrees to 250 Degrees F, For Rod Dia. 1 7/8 in, Package Quantity 5