Vortek High-Temp
Molybdenum Disulfide Piston Seal

AirArms, Beeman, HW, Hatsan, BSA, Gamo and others
Manufactured from a high-temp, Molybdenum Disulfide impregnated Urethane cast bar material. Sized and internally lubricated providing smooth compression shot after shot! 
CNC precision made seals and heavy seal retainers are lathe turned from durable materials requiring no sizing to simplify your DiY tune! Fitting directly onto OEM piston without modifications. Our new MOLY-COREtm seals burnish/sizing to the bore improving sealing and performance shot after shot. More forgiving of bore idiosyncrasies and damage of older bores. Dynamic fitting to most bores!  (Prices represent 1pc)