Benjamin Crosman Hand Pump O'ring Kit (PTFE O-Ring Update)

Benjamin Crosman Hand Pump Kit Has all required O-rings Buna-N 70 nitrile O-ring # 8 is updated with white 55D Durometer polytetrafluoroethylene for longer life Have included Original # 8 if you fail at PTFE O-ring install Match Oring Packet to Number on Sheet Photo is for Illustration only. Made of polytetrafluoroethylene (PTFE) for use with a variety of chemicals, fluids, and gases Round in shape to provide a seal between cylindrical overlapping surfaces Can be used across a wide temperature range from -328 degrees F (-200 degrees C) to 500 degrees F (260 degrees C) Durometer (hardness) of 55D for resistance to penetration Meets standards defined by Aerospace Standard AS568A