... curingagent, mix ratio 12:1 to 10:1. The polysulfide sealant used for waterproof joint sealing or caulking insubway,tunnel,driveway ... , cistern, hydro powerstation, sewage treatment, water supplyand drainage system.The sealant is a netural substance, main characters:1.non-toxic,no ... pure, well-distributed.3.Inject the mixer into joint by sealant gun, use trowel make surface plain.4.Use any waterproof ...