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A close tolerance bayonet is a vital component in vacuum insulated cryogenic piping systems. It ensures a tight connection between inner and outer pipes, minimizing heat transfer and maintaining the required low temperature environment. By reducing thermal conduction, it optimizes insulation performance and acts as a barrier, creating a vacuum-sealed space that minimizes heat transfer through conduction, convection, and radiation.
Additionally, the close tolerance design prevents leaks, offering a precise metal to metal seal that minimizes the risk of cryogenic fluid escape. Other advantages include eliminating the need for elastomer O-rings or PTFE gasket as sealing material at cryogenic temperature. Both materials in essence are not suitable for cryogenic use due to its unfavorable thermal expansion coefficient at cryogenic temperature.
