At present, Nautilus Marine Service offers four basic configurations for cylindrical pressure housings as shown below. Beside the outer diameter and wall size, the pressure rating is significantly determined by the length of the cylindrical part.
Tubes are closed by end caps (with or w/o flanges) on default. However, other configurations are also feasible (e.g. plane windows/plates). Self-sealing vacuum ports are advisable when just two end caps are used to close the tube. Together with the deck purge box they are easy to handle and a straightforward way to keep the housing free of any moisture as an alternative to Nitrogen.
In case flanges are used, it is still recommendable to consider a vacuum port as an air relief valve.
Nautilus Marine Service does not provide protective housings for cylinders due to the various configuration possibilities. We have seen applications where protective frames/cages are made of Delrin or carbon fibre. However, any other plastic would be suitable.
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