... .non-toxic,no pollution, 2.anti-mildew, anticorrosion 3.waterproof, good resistance to oil,acid,alkali Polysulfide sealant manufacturers,we ... :1 to 10:1. The polysulfide sealant used for waterproof joint sealing or caulking insubway,tunnel,driveway,highway,bridge, natatorium, cistern ... :1.non-toxic,no pollution,2.anti-mildew, anticorrosion3.waterproof, good resistance to oil,acid,alkali4.Tack free time ...