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O-ring Size

For a plunger

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#1 Quilan Fett

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Posted 27 December 2007 - 12:14 PM

I am building a plunger gun and need some help. It is setup like a SNAP with .75" in 1.25" PVC. What size o-ring should I be using?
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SNAP Shotgun


This guy can see the future!

QUOTE(pokemaster @ Mar 3 2009, 04:18 PM) View Post

hasbro in a nerf war!!!!! dude the will cancel it and confinscate are guns

#2 PharaonArin

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Posted 28 December 2007 - 04:29 PM

Take your plunger to your local hardware store then find a o-ring that fits it.

Edited by PharaonArin, 28 December 2007 - 04:29 PM.

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#3 Carbon

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Posted 28 December 2007 - 06:25 PM

You won't get any o-rings to fit without some kind of cutting: the space between endcap and PVC is very close in this size (one turn of e-tape is too tight). Your best bet would be to use the cut endcap method: cut the endcap in half, and shove the two parts on some .75" PVC with a gap in between. Then build up the gap a bit with e-tape, up to a perfect fit. This way, you can just buy a thick enough ring that will snugly fit on PVC, and not worry too much about exact sizes. (the ring will stretch)
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