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Cable T Connector - needed

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easytim

New Member
Thanks, it's used to make a 40' loop for a metal detector. Metal screws would not work on cover, but I could use plastic screws
 

Mike_2545

Super Moderator
You may want to tap the screw holes if you use plastic screws, the ones these type of connectors come with use sheet metal screws.

 

easytim

New Member
Lorenz Metal Detector - Made in Germany

I believe the light blue chalking is a dielectric material because this is a 40" coil for a metal detector, to use something other dieelectric would render the coil useless.

Any ideas on what the blue material is?
 

DSGarcia

New Member
The body of the 'T' connector in your photo looks like a gray threaded PVC pipe coupling that you can pick up at your electrical supply house or building supply store. You can fill with a silicone caulk (or RTV) for the insulation; it doesn't have to be blue. You can find the threaded strain-reliefs at several different electronics suppliers. Look for the stain-reliefs that have standard pipe threads then match your PCV coupling size to them.
Dale
 

DSGarcia

New Member
Could the blue gel you are looking for be Dow Corning 3-4680 Transparent Blue Silicone Gel? It is a two-part, fast RT or heat cure, transparent blue, low viscosity silicone gel.

Information on Dow silicone dielectric gel products can be found here: http://www2.dowcorning.com/DataFiles/090007c8801bb598.pdf

The other possibility is Emerson & Cuming Stycast Conductive Epoxy 2850FT.
Stycast 2850 FT is a two component, thermally conductive epoxy encapsulant that can be used with a variety of catalysts. It features a low coefficient of thermal expansion and excellent electrical insulative properties. Designed for encapsulation of components which need heat dissipation and thermal shock properties. Stycast 2860 Blue is recommended for use in high voltage applications where surface arcing or tracking is a concern.
 
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