Spring Energized Seal Seal Material Graphite-Filled PTFE Inside Diameter 0.362 in Outside Diameter 9/16 in Overall Width 0.125 in For Bore Diameter 0.56 in For Groove Width 0.149 in For Piston Groove Diameter 0.38 in Application Oscillatory Systems Reciprocating Systems Color Black Cross Section Shape Square For Rod Diameter 3/8 in For Rod Groove Diameter 35/64 in Hardness 55 Shore D Heel Type Standard Maximum Pressure 3 000 psi Maximum Surface Speed 1 920 fpm