A worn or damaged tap valve is the main cause of a dripping tap. Replacing the tap valve is a quick and easy way to stop the drip. The HydroSeal O-Ring Tap Valve seals dripping taps as it utilises the principles of hydraulics to assist in making the seal instead of relying solely on the physical force applied by the user. Engineered in brass to last, HydroSeal O-Ring Tap Valves are available in distinctive hang-sell packs of 2, economy 10 packs and trade packs of 50 and 100.