Piston neoprene question

[pat123]

I have tried to make a piston before but it didn't really work out. I am about to get the stuff to try again. I have heard that neoprene is the best stuff to use as a sealing face. what part of lowes or homedepot would it be in? any other tips are appreciated.

thanks
Pat

[hyldgaard]

innertube from a biketire is also a very nice sealing face, and cheaper too i believe -it's always nice to have some alternatives

[pat123]

thanks i might try that. it probably is a lot cheaper

[hyldgaard]

yea that too

[BigJon]

In homedepot you can get some neoprene washers next to the regular washers and nuts and bolts. They are pretty cheap also

hope that helps

[SpudUke5]

As mentioned before, inner tube is a good sealant and i can tell you that because my piston cannon uses inner tube. Make sure to bolt it to you piston. This is my piston.


Sealing face, 1 layer of inner tube


Side view
Made of hot glue

http://www.spudfiles.com/forums/my-firs ... 11432.html

here is the link to my cannon

[Maniac]

on mc master they sell neoprene ronds and sheets you could use the rod as the piston body and sheet as sealing face

[pat123]

thanks a lot
when i go to homedpot i'll loook for the neoprene washers and if I can't find any i am going to get a inner tube.
I found something else that might work the inside of a kickball. i might try it.

[PVC Arsenal 17]

Try to get/make a gasket punch if you use inner tube. Copper couplings sharpened work great. Put the inner tube over a block of wood and pound the coupling into it with a mallet.

Those jagged scissor-cut edges make me twitch.

[nivekatoz]

You can buy rubber roof membrain in big sheets and its cheap by the foot...Its also used in pond making as the liner....I think its a synthic rubber so it might last longer.....I use it my self in ASCO solenoid valves ,and it works good and hold at least 120 psi..It might hold more???