[Public-List] Custom Gaskets

[Kris Coward]

All the black ones are marked butyl now too; I'd guess that in the
intervening years, non-butyl tubes got abandoned in favour of butyl, and
they started adding carbon to the butyl. (I was working in a bike shop
when I noticed that none of the tubes were terribly distiguishable from
the ones that were explicitly marked as butyl).

-Kris

On Thu, Dec 01, 2011 at 04:30:39PM -0500, George Dinwiddie wrote:
> Back in the early 70s when a friend of mine ran a bike shop, butyl tubes (which are cream colored) were relative rare and more expensive. They were great for making slingshots, though, as they are considerably stretchier than others. 
> 
> George
> 
> Sent from a primitive pocket computer. Please assume all errors are due to that.
> 
> On Dec 1, 2011, at 16:11, Kris Coward <kris at melon.org> wrote:
> 
> > On Thu, Dec 01, 2011 at 04:02:36PM -0500, John Riley wrote:
> >> George Dinwiddie wrote:
> >>> You can also get industrial gasket material by looking under "gaskets"
> >>> in the yellow pages. If you can use scraps, you can probably get it
> >>> pretty cheap.  We've got a strip of 1/8" thick neoprene behind the
> >>> coamings.
> >>> 
> >>> - George
> >>> 
> >> 
> >> Also, a visit to the local tire shop will likely yield some old truck
> >> tire inner tubes...when I tried this, they gave them to me free of
> >> charge, but I had to dig through the pile for what I wanted.  They said
> >> I could take two, and you get a TON of 'gaskets' out of two 18 wheeler
> >> inner tubes.
> > 
> > I've also had good luck with bicycle inner tubes as gasket material (and
> > any bike shop will have plenty in the garbage that you can take for
> > free). I've also noticed in the past that the bike inner tubes (and I'm
> > guessing also the truck tubes) are made of butyl rubber, so given
> > butyl's desirability for other sealing jobs, inner tubes should work
> > quite well enough.
> > 
> > Cheers,
> > Kris
> > 
> > -- 
> > Kris Coward                    http://unripe.melon.org/
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-- 
Kris Coward					http://unripe.melon.org/
GPG Fingerprint: 2BF3 957D 310A FEEC 4733  830E 21A4 05C7 1FEB 12B3

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