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.
