for many years I used the self amalgamating rubber tape like Coax Seal
http://coaxseal.com/products/ with a couple of layers of good quality
vinyl electrical such as Scotch super 33+ tape over top.
Scotch also sells a product called Linerless Rubber Splicing Tape 130C
which is similar in use to Coax Seal which I now use in preference to
Coax Seal. Nothing wrong with the Coax Seal product but I can get the
Scotch products at the local Home Depot.
However, for the past 10 years or so I have been using double wall
adhesive lined heat shrink tubing. My local electronics and electrical
supplies carry this product and it is not that expensive. This I find
both quicker to install, neater, more reliable, and much easier to
remove than the rubber tape followed by vinyl tape method.
As Mark noted, there are also products for use in direct burial
applications but I have no first hand experience with those specific
products. I have buried splices for my own use by using a layer of
double wall heat shrink with adhesive followed by a layer linerless
rubber splicing tap and vinyl tape. I have not had an occasion to dig up
any of my spliced cables so I don't know how they have held up but so
far they have not failed in any way that I can tell.
cheers, Graham ve3gtc
On 2018-02-10 02:41, Mark Sims wrote:
3M has a product called Cold Shrink tubing. It is designed to seal high
voltage, etc cables in buried installations. It is a silicone (?) rubber
stretched over a collapsable polyethylene core. You run the cable through the
core and pull on a tab which unwinds the core and the stretched silicone
collapses and forms a water tight seal.
I have not used it to seal cables, but have used to replace polyurethane
coatings on printer platens (Tek TDR thermal printers and HP9100 calculator
electrostatic printers) that have turned to goo.
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