Features:100% fresh and high-quality Material: Nitrile rubber, features: dependable sealing and ageing resistance. Pressure diaphragm of 50mm fuel water heater. A pleasant helper for upkeep of water heaters, gas valves, etc. Mainly used to increase water pressure. When the water film ruptures, it's going to leak. When the water volume is large, the water strain on the water film will decrease, and there could also be almost no water leakage. When the quantity of water is small, the water pressure on the water film will increase, but the leakage charge could be quicker Includes: 10x Pressure Diaphragm:1 allow 1-2cm errors because of handbook measurement, just be sure you do not mind before you order. 2 to the difference between assorted monitors, the picture won't replicate the particular colour of the item.