Oh yeah, that stuff is great.

Assuming we are thinking of the same stuff, I believe it is called 3M
Scotchcast... They have a bewildering assortment of different products in
this line: I have used #2130, which is listed as "Flame retardant
compound", so may handle the heat.  This is widely used by oceanographers
to seal the power cables for deep sea instruments.  The unipack size B
seals a splice about 1.25" diameter x about 5" long, so you may need the
larger size.  It is sort of a pain to find the data sheets on 3Ms website,
but they are there... maybe under Mine Power products.

cheers,
mike

At 10:15 AM 7/9/2004, you wrote:
><sigh> something I know about.
>
>The thing to use is made by 3M. It is a black potting compound used to
>protect the electrical connections when servicing high-tension lines. It
>is available from Graybar Electric in two-part plastic packages; when
>the seperator is broken the parts mix, so can be kneaded well, then the
>package cut to release the goop. You have about 15 minutes of working
>time, and it becomes hard in about 4 hrs.
>
>I don't know the part number, but the distributor knows what it is.
>
>My client used (and still uses) this to protect and seal electrical
>connections for sewerline robots. Its a killer potting compound.
>
>--Bob
>
>James Nick Sears wrote:

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