I am designing a suppressor while I wait for my form 1 to be returned and I was wondering how to select and cut for an o-ring. Obviously I understand the functional process for cutting a groove in material. My concerns were the depth and width of the groove. I just don't want it to be a pain in the drain to take apart and put back together.
Edited to be a little more clear.
O ring fit?
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- Silent Operator
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O ring fit?
Last edited by noisecatcher on Fri Aug 05, 2016 2:18 pm, edited 1 time in total.
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- Silent Operator
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Re: O ring fit?
I think I found what I was look for here I'll share it to help the next guy. I probably posed my previous question in an unclear manner.
http://www.applerubber.com/oring-gland- ... arch-field
http://www.applerubber.com/oring-gland- ... arch-field
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- SilentMike
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Re: O ring fit?
What size O-ring are you looking at? Is it an internal or external application?
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Mike Smith
Advanced Armament Corp.
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Advanced Armament Corp.
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Re: O ring fit?
What are you looking to achieve by using an o-ring? If you're trying to use it to help secure a mount or end cap to the tube, numerous people have tried and they always end up melting so they gave up.
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Re: O ring fit?
The oring would be like a piston ring really just to keep gas from leaking out of a monocore the link above let me plug in the numbers I had and see how they matched up with stock o-rings. I really need to start posting pictures with my questions.
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- T-Rex
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Re: O ring fit?
I usually factor a fit of 5% the o-ring diameter (per side, sometimes depending on application).
So, for a .065 o-ring, I'll undersized the total ID by .003. You can start at ID -.006 and open it up if it feels too tight.
Material selection, for the o-ring, can play a part in the necessary tolerances as well. Some flex and squish more/less than others. You don't want some materials moving too much or they will wear-out quicker. Same goes for putting too much stress on a harder material.
So, for a .065 o-ring, I'll undersized the total ID by .003. You can start at ID -.006 and open it up if it feels too tight.
Material selection, for the o-ring, can play a part in the necessary tolerances as well. Some flex and squish more/less than others. You don't want some materials moving too much or they will wear-out quicker. Same goes for putting too much stress on a harder material.
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- SilentMike
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Re: O ring fit?
Visit the McMaster Carr website and search under "viton O-ring". They have a chart with the advertised dimensions versus actual dimensions. For instance, an O-ring that is 5/8" I.D. x 1/16" thick is not actually 5/8" (.625") I.D. x 3/4" (.750") O.D.. That O-ring actually measures .614" I.D. x .754" O.D..
Mike Smith
Advanced Armament Corp.
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Advanced Armament Corp.
770-925-9988