Duplex and Triplex Replaceable Rubber Pistons
Our pistons are highly resistant to extrusion wear under
the highest pump pressures. Piston offers  maximum
resistance  to bending  and  hoop  stresses  generated 
by cylinder  loads  and  rod  fits.

Bonded Rubber Duplex and Triplex Pistons
Developed for medium service applications, these pistons
are constructed of oil resistant rubber, bonded to a solid
metal hub. This design permits, increased movement of the
lip and provides a complete linder to piston seal, even with
the enlarged diameter of a wornliner. Rated for all drilling
operations up to 2,500 psi.