Designed for use in high mileage in-frame rebuilds, Wet Liners are manufactured to meet and surpass stringent design specifications. A wet liner has no supporting bore structure and it is held in place by the flange, the flange has to withstand and endure continuous bending and flexing forces. To overcome these stresses all liners receive a Deep Pressure Roll burnishing on the radius directly below the flange. This process strengthens the flange area by more than 50% and reduces metal fatigue, preventing liner fractures. The liners are induction hardened to decrease premature surface wear. All liners receive a special coating to minimize cavitation damage and resist corrosion.