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neoprene

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
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neoprene

Unread postAuthor: rebalgray » Mon Aug 06, 2007 10:03 pm

Where can I get 1\4" neoprene. I need a piece to cut a 3 1\2" washer out of for a piston barrel seal.
Martin
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Unread postAuthor: homedepotpro » Mon Aug 06, 2007 10:22 pm

ace hardware, did you search before you posted this
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Unread postAuthor: rebalgray » Tue Aug 07, 2007 9:04 am

Sure I did smart ass.
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Unread postAuthor: mopherman » Tue Aug 07, 2007 9:10 am

at most hardware stores they sell orange gasket material. its not neoprene but it works
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Unread postAuthor: noob of noobs » Tue Aug 07, 2007 9:12 am

I've had trouble finding neoprene too. Half the guys at Menards and Home Depot think I'm another stupid kid trying to pronounce the name of some paint thinner brand... :roll: Anyway, I've just been using rubber washers so far to seal pistons, but they only go up to about 1.5" diameter. They're in the aisls with the bins of screws and nuts.
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Unread postAuthor: jimmy101 » Tue Aug 07, 2007 12:51 pm

Kmart, Target, BestBuy, near your friends computer ...

It's called a mouse pad. :D
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Unread postAuthor: Modderxtrordanare » Tue Aug 07, 2007 1:09 pm

jimmy101 wrote:Kmart, Target, BestBuy, near your friends computer ...

It's called a mouse pad. :D


Mousepads are too porous and wouldn't hold back the air, it would leak through and get into the barrel.
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Unread postAuthor: pyrogeek » Tue Aug 07, 2007 1:17 pm

my mousepad has a cloth layer on the top, and a smooth, slick back. It's one of those with a wrist support though.
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Unread postAuthor: noob of noobs » Tue Aug 07, 2007 1:57 pm

I took the rubber of a cheap holographic mousepad, and when I tried breathing through it, air leaked through. Maybe it was just a bad pad, but it wouldn't work as neoprene. :cry:
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Unread postAuthor: jimmy101 » Tue Aug 07, 2007 3:14 pm

Most mouse pads are made of neoprene. They usually have either a fabric or hard plastic cover on one side. Both types of covers are probably unsuitable for a sealing face.

Whether a mouse pad will work depends on what type of seal is being made. As a diaphragm you would probably need closed cell neoprene which I believe is less common and more expensive. (McMaster sells all kinds of neoprene.)

For a gasket, such as for the face of a barrel sealing piston valve, I would think<sup>*</sup> that any kind of thick (~1/4") neoprene would work. When it is compressed between the barrel and piston it will collapse and seal. So, the question is does it leak when smashed between two surfaces?

<sup>*</sup> That and $5 will get you a cup of coffee at StarDucks. Surely somebody had tried mouse pad neoprene as the sealing face in a barrel sealer.
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Unread postAuthor: jackssmirkingrevenge » Tue Aug 07, 2007 4:25 pm

I use truck tyre inner tube :D
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Unread postAuthor: frankrede » Tue Aug 07, 2007 6:31 pm

rebalgray wrote:Sure I did smart ass.
Martin
Was that neccessary?
I found orange gasket material in plumbing repair.
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Unread postAuthor: rebalgray » Tue Aug 07, 2007 6:55 pm

Was that necessary?


Maybe not. But was that any way to answer my question?

Thanks for the come back guys. I have a mouse pad that may work. Here is a reply I got from one supplier. To rich for my blood.
Martin

Quote: RFQ#020707-3

Material: Neoprene Rubber

Hardness: 80 +/-5 Duro

Dimension: 1/4"(=6mm) T×3!mDIA

Quantity: 3 pcs.

Unit Price: $10.50/ea (Total $31.50 included S&H)

Delivery: 7 Business Days after PO

Payment: Visa/Master/Amex



Regards,

Moriteq USA

Naoko Alborz

1-800-466-1960
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