Large Piston O-Ring 012-90U

HK Army Tank O-Ring Piston Part large o-ring Clear.  For HK Regulators only.

First Strike T15 Valve Plug O-ring - ORNG 017-P70

First Strike T15 Regulator Spring Pad O-ring - ORNG 012-P70

FOR HK Army Tank part only small piston o-ring

The Tippmann Cyclone Feed System piston requires a seal to operate properly. If you are finding your cyclone feed system starting to get sluggish, Pop off your old one and put the new one in with a...