The Haskel 16771 is a seal kit for control valve spool and sleeve, designed for 5-3/4 inch liquid pumps with 1.5, 2, 2.2 or 3 HP. The seal kit includes O-rings and a bumper-spacer that prevent leakage and ensure smooth operation of the valve. The seal kit is compatible with CFC recovery models and can be easily installed with a tool P/N 28584 or a brass rod. The Haskel 16771 seal kit is a reliable and durable replacement part for your Haskel liquid pump.