Starbrite Marine Silicone Sealant Features: #1 selling marine sealant. 100% ma rine grade silicone, won't turn yellow. Remains flexible from -70 deg. F to +4 80 deg. F Bonds to fiberglass, plastic, wood, glass and metal. Unaffected by s unlight, weathering, most chemicals and solvents. Will not shrink or sag. Can be removed easily - excellent for deck hardware. Special marine formula can be used above and below the waterline. Dries tack free in less than one hour, cures completely in 24 hours.