10Pcs 45mm/50mm Durable Pressure Diaphragm For Water Heater Gas Accessories Water Connection Heater Parts Black Features: fresh and high quality Material: Nitrile rubber, Features: dependable sealing and aging resistance. Pressure diaphragm of 45mm/50mm gasoline water heater. A nice helper for maintenance of water heaters, fuel valves, etc. Mainly used to increase water pressure. When the water movie ruptures, it'll leak. When the water quantity is large, the water stress at the water film will decrease, and there's practically no water leakage. When the quantity of water is small, the water strain at the water film will increase, but the leakage charge could be faster. The Package Includes: 10 goods of 45mm/50mm size. Specifications: Material: Plastic Weight: 25g/35g Size: 45mm/50mm Color: Black Package Includes: 1x Pressure Diaphragm Note: 1 allow 1-2cm mistakes due to guide measurement, just ensure you don't mind before you order. 2 to the variation between various monitors, the picture won't reflect the particular colour of the item.