Apiezon T Grease is a silicone-free medium temperature vacuum grease renowned for its quality and tenacity. T Grease has gained approval from prestigious organizations including NATO and the US Navy. T Grease performs well under a wide range of temperatures, from 10 to 120 degrees Celsius. It has added cushioning and exhibits good sticking power. T Grease has powerful 'gettering' action, meaning it absorbs potentially harmful grease and chemical impurities on metal and glass surfaces. It is easy to clean and remove as it is soluble in hydrocarbon and chlorinated solvents. Applications: As a vacuum grease, Apiezon T Grease is specifically designed for use in the low to medium vacuum range, yet is suitable to be used in the high vacuum range at lower temperatures. We specifically recommend that T Grease is used for both sealing and lubrication in medium temperature environments (but no for highly stressed bearings). It confers excellent cohesive strength and therefore when joints are mated they stay mated, forming an extremely efficient, gas tight seal. T Grease provides extra cushioning between mated surfaces, and is highly effective in protecting fragile glass to glass joints.