The Hypro 4001 O-Ring provides a tight leak free seal in Hypro 4 Roller Pumps.
FIMCO 60 PSI Pressure Switch For High Flo 2.1 And 2.4 GPM Pumps
5157202
FIMCO 60 PSI Pressure Switch For High Flo High Performance 1.2 and 4.5 GPM Pumps
5164271
FIMCO Check Valve For 3.8 and 4.5 GPM Pumps
5168824
FIMCO High Flo 12V Pump Port Fitting X 3/8" HB
5168836
5072220
Hypro 4001 O-Ring