This is the spring usually used inside the pump reservoir(s) of foot pumped player pianos. Blued steel. Length about 8".
5-1/2" Outward Pressure Spring For Foot Pump Bellows - Player Piano Repair
Inward Pressure Spring For Foot Pump Bellows - Player Piano Repair
Gulbransen Pressure Spring For Foot Pump Bellows - Player Piano Repair
A Set of 8 Black Rubber Spring Dampers for Besson Euphoniums NEW LOW PRICE
A Set of 8 Black Rubber Spring Dampers for Besson Sovereign Tubas NEW LOW PRICE!
A Set of 8 Black Rubber Spring Dampers for Besson PRESTIGE 4 VALVE Baritones ...
