[TowerTalk] Shrink Tubing on Coax & PL-259?

Ian White GM3SEK gm3sek at ifwtech.co.uk
Tue Jul 14 23:10:05 PDT 2009

Tom Osborne wrote:
>Hi Scott
>Seems to me that I saw somewhere a sealer that went inside the shrink tube.
>Then when you heat the tubing, it shrunk and kept the sealer inside.  73
>tom W7WHY

Hot melt glue, from a glue gun. It can be used with plain heat shrink 
sleeving, or to fill gaps inside sleeving that already has a thin lining 
of glue.

For "heavy duty" applications, almost all connectors could use some 
strain relief where the cable enters the connector body. Apply a ring of 
hot-melt glue at this location, then while the glue is still hot and 
liquid, slide on the sleeving and shrink it down. When all of this has 
cooled and set, it makes an excellent waterproof strain relief.

As Roger says, the sleeving and adhesive can be removed quite easily 
when you really want to.


73 from Ian GM3SEK         'In Practice' columnist for RadCom (RSGB)

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