Dec 26, 2018 · No. 1. Rutland Products 76C 500-Degree RTV High Heat Silicone Seal, 10.3-Ounce Cartridge, Clear, 10 Fl Oz. Rutland High Temperature Silicone is a great solution to your sealant and adhesive needs. Forms a tough and flexible seal. Will uding: glass, metal, plastics, fiberglass, wood, brick, and stone.