Henkel has introduced LOCTITE NS 5540 and NS 5550, thermally activated sealing compounds specifically designed for use in high temperature and high-pressure environments. LOCTITE NS 5540 brushable liquid can seal flanges carrying up to 2900 psi (200 bar) steam at temperatures up to 1300°F/700°C. The fibrous paste sealantLOCTITE NS 5550 is designed for high temperature (up to 1500°F/815°C) and high-pressure applications (up to 5000 psi/340 bar). These products cure in the presence of heat to form a mechanical seal on metal-to-metal flanges and fittings and are designed to allow for disassembly for future maintenance and repairs, said the company.
These sealants are suitable for sealing steam pipelines, hydrocarbons, gases coal lines and other process fluids in high pressure, high-temperature environments such as those found in power generation facilities, pulp and paper mills, mines, oil and gas refineries etc.