This pump bucket is the replacement seal component for the Cincinnati Gem water pump system — the chain-driven mechanical pump that delivers water from deeper wells than hand-pump pitcher pumps can manage. Each bucket consists of a rubber disc with twin flanges mounted on an aluminum link, designed to seal watertight against the tubing wall as it travels through the pump cycle.
The buckets are the wear part of the Cincinnati Gem system — they cycle through the tube continuously during pumping, eventually losing their seal as the rubber compresses and the flanges wear. Order replacement buckets when pumping performance degrades. To calculate how many you need: divide your chain length by the bucket spacing (typically 4-6 feet apart). Each bucket adds incrementally to the chain length, which is part of the math when designing or rebuilding the pump system.
For households operating Cincinnati Gem pumps as their primary or backup well-water solution, this is the right replacement-parts purchase. The same bucket design has been in continuous production for decades because the mechanical engineering simply works. Pair with the Cincinnati Gem chain sprocket replacement for a complete pump rebuild kit. Lehman’s catalog selection.
