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Hi Ray.
Use waterproof rubber boots that cover your switch
toggle that are available at marine supply stores.
The boot fits over the toggle and screws onto a
threaded portion just under the toggle and seals with an O ring.
This keeps the water from entering thru the front
of the switch by the toggle.
You could then encase the entire switch except for
the toggle in silicon.
You would not need to make your own rubber covered
membrane for a switch. Pressure switches already encased
in rubber are available even at Radio Shack. The
only thing you would have to make sure of would be that where the
insulated wire enters the rubber covered pressure
switch that no water entered there. I have seen these pressure
switches
at Radio shack and elsewhere but am not positive
that they are totally waterproof. You probably could insure that by
putting
a blob of silicon at that joint where
the insulated wire entered the rubber covered switch area.
I have a similiar switch on my Taurus 9mm
pistol's laser that works by my finger pressure.
Just a few options here. Hope they
helped.
Kindest regards,
Bill Akins.
----- Original Message -----
Sent: Thursday, June 09, 2005 1:06
PM
Subject: [PSUBS-MAILIST] water proof
switches
Ok,
Another basic parts question. I am designing
a
semi-dry ambient. How do I keep electrical switches
dry? For that
matter how do I keep the electrics dry?
I can envision running the
electrics into sealed
compensated boxes to keep salt water away from
bus
bars, barrier strips and fuses.
How about switches? I can mount
them on the front
sides of the sealed boxes to keep the terminals
away
from water. How do I keep water from invading through
the front of
switches? Can I use gas proof switches?
Are they sealed? Or just designed
not to spark?
So far the only real thought I had was to mount
push
button switches on a plate then cover with a rubber
membrane. To
active a push button, press on the
membrane over the switch and press it
through the
rubber.
Displays are easy. I can mount them inside
sealed
boxes behind
plexiglass.
Regards,
Ray
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