[PSUBS-MAILIST] O-ring Question

[Sean T. Stevenson via Personal_Submersibles]

Alan, do you have a copy of the Parker O-ring handbook? Best free resource out there for designing O-ring seals. ORD5700.pdf  Download it from the Parker website.

Sean


On February 5, 2017 6:32:51 PM MST, Alan James via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>Hi,am having trouble Googling an answer to this question.   I have an
>O-ring groove in the bore of my light housing, sealingbetween the bore
>& the side of my acrylic lens as per attached diagram.On a piston
>O-ring groove it calls for an optimal 2% stretch & not more than 5%.I
>can't find any reference to what stretch if any should be, if any, for
>an o-ringin a bore groove. I did see that in a rotary application they
>don't advice thattheir should be any pressure on the rotating
>rod.Should I be designing so that the o-ring will have a 2% stretch
>around the lens?Thanks, Alan
>
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