... all corrosive chemicals. When it is used for pumps, frictional heat is freely conducted to the stuffing box metal ... , fluids where contamination is not permissible for centrifugal pumps, plunger pumps, mixers valves, etc.Graphite Packing includes: Expanded ... hot water, high temperature and pressure steam, heat transfer fluid, hydrogen gas, ammonia, organic solvents, hydrocarbons, cryogenic liquids ...