The Mi-T-M 70-0501 Pressure Washer High Pressure Seal Kit restores sealing within the pump to maintain proper pressure during operation. This kit includes seals and related components used in high-pressure sections of the pump. It works by preventing water leakage between internal parts while the pump cycles, allowing pressure to build and remain consistent. Proper sealing supports efficient performance. Replacing worn seals restores pressure output and reliable pressure washer operation.