... silicone water repellent waterproofing agent Similar to KF-99 and TSF-484 Si-H bond Vis.: 25oC: 20-30mm2/s silicone water repellent ... of powders, glass, ceramic, leather, paper, metal, cement and marble.b. Used as the cross linker for addition type silicone rubber ... away from fire, sunlight and rain during storage and transportation.b. Shelf time: 6 months. Beyond the time, it still can ...