1.non-toxic,no pollution, 2.anti-mildew, anticorrosion 3.waterproof, good resistance to oil,acid,alkali Polysulfide sealant manufacturers,we ... 12:1 to 10:1. The polysulfide sealant used for waterproof joint sealing or caulking insubway,tunnel,driveway,highway,bridge, natatorium ... sealant gun, use trowel make surface plain.4.Use any waterproof cloth(fabric) keep the joint surface from rain or water in ...