The Caliber® X400 Ultra-High Temperature Piston is a urethane bonded piston designed to withstand pressures up to 7500 psi and extreme temperatures up to 400°F. It will perform equally well in water-based mud, oil-based mud, and brine water, and is consistently utilized in all stages of the drilling process. With the versatility to withstand extreme applications and all types of fluid, the Caliber® X400 piston provides a multi-purpose solution for all drilling environments.