Features: 1. Application: Fits for Comet Pump ZWD2530G, ZWD3030G, ZWD4030G, ZWD4040G, ZWDK3030, ZWDK4036 AND ZWDK4040 pumps. Check your owners manual before ordering. 2. Superior Quality: Manufactured from high standard rubber and plastic for strength and durability, the quality will meet or exceed your OEM seal repair kit. 3. Direct Replacement: Replace Comet ZWD Seal Repair Kit OE# 5019006400. Included all necessary pressure wahsers pump seals and O-rings, ensure properly repair your pump. 4. Easy To Install: No professional skill required. Simply put off the worn out washers and o-rings of the seals, then directly replace with our new seal repair kit. .