Electronics silicone

[electra225]

I want some silicone to use with electronics. I understand I shouldn't use the kind you use in automotive work to make a gasket. It has an ingredient that may be corrosive in electronics. I want the kind the TV guys use on flyback transformers and that kind of thing. What kind of silicone do I need and where can I get some?

[19&41]

Clear RTV should do. Try to keep from trapping bubbles in it. They make a flowable RTV for automotive windows that you can apply in coats if that will help.

[19&41]

Both are automotive products.

[William]

There is a silicon made for electric applications. I have seen it but can't remember the name of it. The next time you are in Home Depot or Lowes look in the electrical section that has computer wiring stuff, electrical tape, and electrical testers.

Bill

[electra225]

Thanks, guys. So what I need is RTV sealant, not "Form-A-Gasket" type material, right? I'll look at HD, I need to go there for something else.

[19&41]

The clear stuff should be more easily found at an auto parts store. You want no pigmentation in it.

[electra225]

Got it. Thanks, Rex.

[TC Chris]

Just tried Google. Loctite makes a clear one that they recommend "for electrical connections" but then they say:

Not recommended for use on the following plastics: polyethylene, polypropylene, polytetrafluoroethylene (PTFE), polymethylmethacrylate (PMMA), polycarbonate or PVC. Not recommended for use on marble, limestone, cement, concrete, brass, copper, magnesium, iron, zinc or galvanized metals.

Yay, it's great for aluminum wire without insulation?

But then here's one from "AGS" intended for automotive ignition systems:

https://www.amazon.com/AGS-DS1-Dielectr ... 9800664323

I looked on and there are a bunch of "electronics grade" silicones. Try a Google search on "electronics grade silicone." Seems to me that some of the sealer-type ones have acetic acid as a component, which gives them the vinegar smell, and that is what you were thinking of as a no-no for electronics.

Chris Campbell

[hermitcrab]

what was the stuff manufacturers used to mount components that eventually turned conductive and caused problems ?... was that considered glue or silicone ?

[19&41]

Electronics grade silicone liquids are an industrial 2 part potting and casting RTV materials. Clear silicone RTV should be safe when used in relatively small amounts.

[electra225]

The TV guys slather black silicone of some kind on flyback transformers. I want something similar to fill the ends of paper rolls I have to assemble capacitors. I need to make some Katie Caps and I want silicone to fill the end of the tubes.

[19&41]

Here is what was probably used on the transformers in the first place. If silicone's ingredients should concern you, there is this. i checked one of your local stores for it. It is what the old timers also used.

https://www.tubesandmore.com/products/c ... ating-2-oz