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O-Rings

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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O-Rings

Unread postAuthor: Pilgrimman » Thu Aug 23, 2007 2:42 pm

I've read that a lathe is required to mount O-Rings for most applications. I've also read that if an O-Ring is mounted in this way, that it can seal thousands of pounds of pressure. I only need O-Rings to seal about 100 pounds of pressure, but I still want them seated in a groove. Since I have no access to a lathe whatsoever, will an improvised groove work if I am precise about it? Also, where would be the best place to get O-Rings, as I've never seen them before? If anyone can give me a link to more information as well, it'd be appreciated! Thanks!
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Unread postAuthor: rednecktatertosser » Thu Aug 23, 2007 2:45 pm

You can get orings off of www.mcmaster.com I ordered 20 ft of oring cord stock so i could make custom rings to any size i need. this action is highly recomended.
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Unread postAuthor: hi » Thu Aug 23, 2007 2:48 pm

if you thinking you need o rings for a piston, you dont. ive made all my pistons without o rings and its works fine.

i have seen people make o ring grooves with a dremal, it works fine, but again, unnecessary.

now if you need it for something else, ignore me, as i know nothing.

ps- you can get o rings at the hardware store and some plummings shops/irrigation shops.
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Unread postAuthor: Pilgrimman » Thu Aug 23, 2007 3:01 pm

@ hi

Trust me, I need O-Rings. This is an unusual application, piston-wise.
Thanks for the links and stuff! (Both of you)
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Unread postAuthor: cdheller » Thu Aug 23, 2007 6:19 pm

http://www.parker.com/ead/cm2.asp?cmid=983

a free for the downloading program that has more o-ring info than you'll ever need.
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Unread postAuthor: frankrede » Fri Aug 24, 2007 3:05 pm

I have a case that has Several o-rings ranging from a few millimeters in diameter to over 2" in diameter.

Check your local harbor freight maybe?
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