National 12-P-160 Mud Pump Urethane Bonded Piston 6-1/2" Mission Part 1502060
Our bonded-piston design with a urethane-based elastomer compound for oil-based drilling fluids. While polyurethane pistons can be used in
water-based muds, they perform best in oil-based and synthetic fluids. The best option for oil-based drilling fluids is the urethane-rubber compound.
Bonding the piston to the metal hub provides the strongest, most extrusion-resistant style of piston available and also minimizes any leak paths from forming on the inner diameter of the piston. The bonded-lip design has an open inner sealing lip that also enables the rubber to expand inward as
a result of thermal expansion without excess loading of the sealing lip.
With proper cooling and lubrication from the liner-wash system, the bonded-urethane piston can be used successfully at temperatures up to 250°F (121°C)
Features, Advantages and Benefits
• This piston is the best choice for all types of water-based drilling fluids.
• The piston is bonded to the hub for optimal strength and extrusion resistance.
• The open inner lip allows for thermal expansion without overloading the seal lip.
• The piston comes complete with hub O-ring and sleeve.
