[TowerTalk] sealing goop

[jimlux]

Roger N0VR wrote:
> So true!
> 
> The only way I've overcome that problem is to make connections and seal them
> on the ground before I put things "in-the-air". Then it's just a matter of
> routing cables to wherever they are destined.
> 
> A lot of the different wx proofing ideas we have seen over the years are
> very interesting. There are aspects of all of them that are reasonable and
> work well. It's fun to take bits and pieces of others experiences and try to
> make one work for you.
> 
> I like the reference to the goop-lined heat shrink. I've never heard of
> that. Anyone have a favorite source for that stuff?

I'm pretty sure it's been described here before. The ones I've seen are 
made by 3M, but I can't recall what it's called specifically.

I just looked on their website and there's
3M™ Wraparound Heat Shrink Cable Repair HDCW sleeve

But, I also found something that looks even niftier (and needs no tools, 
etc.)

It's the 3M Silicone Rubber Cold Shrink Connector Insulators 8440 
Series.  It seems to be a sort of prestreched tube with a core. You 
slide it over what you want to seal, and pull the core out (which peels 
away like a grease pencil wrapper) and the tubing shrinks down over the 
workpiece.

google for the name of the stuff, and you can find the datasheet on 3M's 
site.