LM2500 Gas Turbine
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Publication Title | LM2500 Gas Turbine
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Page | 173 LM2500 Combustion Turbine Course MILITARY SEALIFT COMMAND 7. Oil Seals a. b. c. The oil seals are a labyrinth/wind-back seal, combining a rotating seal having oil slingers and a serrated surface with a stationary seal having wind-back threads and a smooth rub surface. The oil slingers throw oil into the wind-back threads which direct the oil back to the sump area. The serrations cut grooves into the smooth surface of the honeycomb stationary seal to maintain close clearances throughout a large temperature range. This seal allows a small amount of seal pressurization air to leak into the sump, thereby preventing oil leakage. Copyright © 2021 by Technical Training Professionals |
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