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how hard should sealing neoprene be?

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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how hard should sealing neoprene be?

Unread postAuthor: mopherman » Tue May 29, 2007 5:04 pm

i just looked on mcmaster and it has rubber sheet of diferent densities. how hard should it be?
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Unread postAuthor: hi » Tue May 29, 2007 5:07 pm

somehwere between the hardness of a rock and a pillow.

more spesificly, about as hard as an innertube, maybe slightly harder for larger barrels.
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Unread postAuthor: mopherman » Tue May 29, 2007 5:09 pm

lol, I didnt see the last part of you post untill just a second ago. thanks though.


Would this work? 9455K874
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Unread postAuthor: CS » Tue May 29, 2007 5:36 pm

Yes, I believe that will work. I generally hear 60A, and 70A as the proper hardness.
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Unread postAuthor: Velocity » Tue May 29, 2007 5:55 pm

70A is great... I use the ultra pure version of neoprene (found on mcmaster). Its expensive, but I have not had a single sealing problem with it (there was one issue, but it was the washer that caused it).
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