Our company specialized in many kinds of water supply capsule.Below technical information is for your reference: 1.Material:Polyisoprene IIR/Ethylene-Propylene-Diene Monomer EPDM/Natural Rubber 2.Thickness:2.5mm/3mm or at your requested 3.Temperature Tolerance:-10℃—+100℃ 4.Pressure:10Bar/16Bar etc. 5.Capacity:50L/100L/150L etc. 6.Application:We can supply higher specification and meet international drinking standards,and can be directly used in drinking water.HAVC water.Water supply & drainage etc.