uxcell Rubber Water Heater Parts Diaphragms Seal Gasket 55mm Dia 2 Pcs Product Name : Water Heater Diaphragm;Main Material : Rubber Outer Diameter(Each) : 55mm/ 2.2";Hole Dia : 5mm/ 0.2" Thickness : 2.5mm/ 0.1";Color : Black Weight : 9g Package Content : 2 x Water Heater Diaphragm