What is the common sealing type for external floating roof storage tanks?
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The types of sealing systems for external floating roof tanks are as follows: 1. Mechanical seals: (1) Single seal only; (2) Secondary seal installed at the seal plate; (3) Secondary seal at the edges. 2. Elastic filler seals installed at the liquid level (without a gas space): (1) Single seal only; (2) Rain shield available; (3) Secondary seal at the edges. 3. Elastic filler seals installed in the oil-gas space: (1) Single seal only; (2) Rain shield available; (3) Secondary seal at the edges. I would like to ask everyone: What are the differences and connections between these three types of sealing systems? What does \"secondary sealing at the edge\" mean?
Currently, elastic packing is generally used for sealing once. A secondary seal is used to reduce the evaporation of oil from the primary seal. A secondary seal replaces the windshield wiper.
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