The humble o-ring will do the job. Just use a standard rotary switch and 
pass the shaft through a lightly greased o-ring. Car fuel line fittings can be a 
useful way of holding them in place.
Good for 100m if done right.

Steve.



On 10 Aug 2006 at 12:30, Steven Howes wrote:

> Hi,
> 
> I was wondering if any of you have had any experience with waterproof
> rotary switches, they seem to be a bit of a bitch to get hold of. What
> I need is a waterproof double pole three position rotary switch (I can
> deal with more positions if needed, I am sure it can me limited
> somehow).. Now I can find any switch that is any one of the above, but
> not all. Do they even exist? I am open to alternatives, but ideally I
> need a rotary one that is waterproof to a metre. Thanks in advance.
> 
> Steve
> 
> -- 
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==========================================
Steve Baldwin                          Electronic Product Design
TLA Microsystems Ltd             Microcontroller Specialists
PO Box 15-680, New Lynn                http://www.tla.co.nz
Auckland, New Zealand                     ph  +64 9 820-2221
email: steve@tla.co.nz                      fax +64 9 820-1929
=========================================


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