3M DC 12V Solar Hot Water Circulation Pump Motor Heat Resistant Food Grade Silent Coupler Waterproof UK. -DC 12V Hot/Cooling Water Circulation pump. 2x brass coupler. -The axis of the pump adopts high-performance ceramic shaft, high precision, good shock resistance, because the pump adopts the ceramic sleeve and the ceramic shaft precision cooperation, the noise is lower than 35 decibels, the power smaller even can reach 30 decibels,almost mute effect.
eBay