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Structural features: Labyrinth seal: simple structure, convenient installation, and high gas consumption. Carbon ring seal: Low nitrogen consumption, only 20% -30% of labyrinth seal, strong oil resistance; But installation and maintenance are more complex

Application condition: Compressor dry gas seals are usually equipped with a rear isolation seal, which aims to prevent bearing oil from contaminating the dry gas seal and prevent leaked gas from entering the bearing oil. The dry gas seal used in LG series compressors can use labyrinth seals as rear isolation seals or carbon ring seals