Generator Hydrogen sealing Sealant D20-75 is lightweight and widely used as a compound joint sealant, groove sealant, corrosion prevention, lubricant, insulation material or filler for threaded joints. It is used for groove sealing of generator end caps in Fossil fuel power station and nuclear power units, hydrogen sealing of steam end and exciter end seals, plane sealing of hydrogen in outlet housing, and sealing of stator outlet bushing with glue. At present, the vast majority of steam turbine generator units in China, including 1000MW units, 600MW units, and 300MW units, all use this type of sealant. Hydrogen sealing of turbine generator end cap., In addition, this material can also be used to seal the end caps of aircraft engines, heaters, railway and truck air brakes, and pneumatic valves. In other words, for all metal to metal joint surfaces that use gasket washers, sealant D20-75 can be used instead, achieving remarkable results.