The Nitrile Rubber Bonded piston was designed for use with water-based muds in temperatures up to 220°F. It is particularly suited for situations where a driller needs to get extra life from a liner that is already worn to a larger ID.

The Nitrile Rubber piston was designed with a replaceable rubber Flex-Lip seal for high performance with water-based muds. The seal can be easily replaced in the field for a quick and economical drilling solution. Our proprietary blend of rubber and fabric used in the replaceable rubber piston resists the pinching and extrusion that commonly occurs in the heel of the piston. The use of synthetic fabric eliminates the loss of heel strength caused by water absorption, allowing the piston to achieve a higher level of performance compared to competing designs. ...

The Caliber® X200 Piston uses the same high quality urethane bonding process as our higher range pistons but offers better value when running in normal drilling conditions. It is designed for temperatures up to 180°F and pressures up to 7,500 psi in oil based mud. Proven, reliable performance in every piston Superior lip and cut back hub design reduces wear on liner dramatically lowering mud pump operating costs Bonded urethane design for longer life ...