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Potentiometers and silicone sealant

Potentiometers and silicone sealant

Potentiometers and silicone sealant

(OP)
I am using a potentiometer in a an application and I have been told that using Silicone sealant near it could give off fumes that effect the resistance and give false readings.

I have looked at the data sheet and the fumes given off is Acetoxysilane (acetic acid).

Can anyone help regarding this.

Highest regards,
Russell........

RE: Potentiometers and silicone sealant

If you fully oven cure the RTV or air dry in a well ventilated area there should be no problem.
There will be problems if RTV is applied to a metal surface and closed in a housing or enclosure uncured. The acid will corrode or disolve any metal it has been applied to.
Cure time will vary with how much is applied to specific area. A dab about the size of a pencil eraser will take approx. 2-3 hrs @ +65 degrees C in a circulating chamber.

RE: Potentiometers and silicone sealant

Why not use digital pot ? it can be adjusted remotelly,
automatically etc.

<nbucska@pcperipherals.com>

RE: Potentiometers and silicone sealant

Have you tried to obtain a 2-part silicone compound without acetic acid?  

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