Flange Sealing Without Gaskets

hello guest,

first of all if the manufacturers says so then the bellows are designed accordingly.

the joint design by the manufacturer for the bellow might consider these factors and above all he might have used soft material (as you mention the bolting requires a specific torque) for the joint as the parameters stated by you are not harsh.

i suggest you to understand and check the design of the end connection from the manufacturer before going for the bellow.

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khudi ko kar bulnd itna...

I would ask the manufacturer of the bellows for an explanation. In my industry, wet air contains water vapor. The water vapor molecule is smaller than the H2 and O2 molecules that make up most of the air, so they will leak through a smaller opening.