Hylomar M is a highly engineered, polyester-urethane based non-setting and non-hardening gasketing compound. The compound is resistant to a wide range of fluids including industrial fuels, oils, water and brine, air, turbine and piston engine combustion products, water, water/glycol and methanol mixtures, petroleum and synthetic diester lubricating oils, gasoline and kerosene fluids (Avtur and Avcat) and fluorocarbon refrigerants. Hylomar M can operate at temperatures between –50°C and up to + 250°C. Hylomar M can be used to seal both joint surfaces and threaded parts.