Ceramix T.C. High Temperature Caulk Fortafix 'Ceramix' T.C. Caulking Compound A water-based 60 Thixotropic Ceramic Adhesive/Sealing Compound. A maximum continuous operating temperature of 1250°C / 2,282°F Designed for use where a high-temperature rigid seal or adhesion is required Can be used as an adhesive or sealant where resistance to the spread of flame is required Standard caulking tubes in stock. Other quantities are available. Click Here for Product Data Sheet Click Here For Safety Data Sheet Standard and Rush Shipping are available upon request.