LST Penetrant is specially formulated with low surface tension for fast penetrating action. LST attacks rust and corrosion to free frozen parts and has a powerful foaming action that provides complete surface coverage while displacing moisture. LST contains no chlorinated solvents. It has a flash point of 175°F (79°C). For those hard to reach applications, it is designed with an inverta spray valve allowing one to spray in an upright or inverted position. NSF H2 registration 059851: (aerosol); 059823: (bulk).