Hylomar Universal Blue is a polyester urethane based sealant that is non-setting and non-hardening even at high temperatures. The compound is resistant to a wide range of fluids including all 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 & Avcat) and fluorocarbon refrigerants. Hylomar Universal Blue can be used to seal joint faces or threaded parts The leading non-setting gasket & jointing compound available today. The product can be used to replace a traditional gasket or to “dress” it to significantly improve the performance of the gasket Non-hardening Wide operating temperature range (-50 to +250ºC) Fuel resistant.