AR1857 18mm Seal Packing Kit XR Annovi Reverberi RK RKA RKV Pressure Washer Pump Features: Application: Used to service 3 cylinders on your Annovi Reverberi pressure washer pump, works for RK, RKA, RKV, XRC and XRA series pumps. Replacement: Replacement for Annovi Reverberi Pump Water Seal Packings Kit AR1857, also replaces Mi-T-M 70-0177. Package Included: 3 Sets; 3 × High Pressure Packing, 3 × Low Pressure Seal, 3 × O-Rings; Premium Material: Constructed of high standard rubber and plastic with great strength and durability to ensure long work life with the ultimate protection from water or chemical leaking, High Quality Material for Best Performance. .