The Caliber® X450 Extreme Service Piston is a urethane bonded flex-lip piston designed to perform in the harshest of drilling conditions. It is suitable for every application and mud type and will withstand operating temperatures up to 300°F and pressures up to 7500 psi. Superior design and ultra-durable high temperature urethane allow the Caliber® X450 to outperform all other high temperature/extreme service mud pump pistons on the market.