part 20369 Backup Ring, Valve Plug Cat Pumps code 20369 Details Cat Pumps number20369 DescriptionBackup Ring, Valve Plug Qty per pump3 Also comes in 31292 Valve kit, NBR (STD)31296 Valve kit, FPM (.0110) Fits these pumps Cat Pumps 25 Frame 5 25602560BH25652565BH2565T13 Cat Pumps 35 Frame 2 35603560RST14