Questions tagged [seals]

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6 questions with no upvoted or accepted answers
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votes
2answers
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How Can You Calculate Force to Overcome Friction From an O-Ring Seal?

I essentially have a piston in a tube that is sealed with an O-Ring and actuated with a solenoid. The friction of the O-Ring however, is higher than estimated (guessed as far as I can tell) by the ...
4
votes
0answers
59 views

Relating internal stress of an o-ring due to thermal expansion to amount of free volume in a gland

I am trying to come up with an analytical way to determine the optimal gland size that an elastomer o-ring will sit in. The amount of free space in the gland is determined by the thickness of two ...
3
votes
0answers
37 views

water leak through subterranean cable penetrations in concrete

See the image below for the detail of 4 no. cable ducts that run from a trench in a raft foundation (on the left) through an approximately 1 m square penetration in the raft foundation, through soil (...
1
vote
0answers
40 views

Sealing of non-circular cross sections

I have to mate two sections of something that could be reasonably approximated by a tube, though the material is stainless steel, and the cross-section is very non-circular, so I cannot use an o-ring. ...
0
votes
1answer
105 views

Help identifying seal/gasket

I need to identify the seal/gasket shown below so I can order a replacement. I can measure the OD, ID and Height, but I'm not sure what to call it to narrow down my search. What type of seal is this? ...
0
votes
0answers
108 views

O-rings: Why a torus?

O-rings are very common components in all kinds a machinery used to, say, keep a fluid from leaking from one side of a piston to another inside a cylinder. But why exactly are O-rings tori? Why are ...