[UK-CONTEST] Black Denso tape?

[Ian White GM3SEK]

Does anyone know where to buy the black Denso tape that professional 
antenna riggers use? It is really a kind of putty that comes as a wide 
reel with an interleaving paper, and has a very strong 'grab' onto 
itself and onto cable jackets.

(Since Denso took over Sylglas, who make the extremely messy green/brown 
kind of sealing tape, that product is now known as "Denso tape" too... 
but the black stuff is quite different.)



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73 from Ian GM3SEK