I've made a few cork pop guns using a PCV pipe and a dowel with an O ring to
ensure a tight fit. But I need advise as to the proper lubricant to prevent
the thing from sticking.
Vaseline and KY Jelly work fine for a while but soon lose their
I thank you for your help.
Petroleum based lubricants will break down or break down the rubber
O-ring. Try silicon lubricants. They last longer without decomposing.
You should be able to get silicon based grease at any auto parts
It has a little bit to do with how tight the O-ring fits the pipe.
Try machining down the groove that holds the O-ring, than if you get
too much leakage, try a second O-ring, in parallel to the first.
And use silicone grease.
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