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Re: [TowerTalk] Sealing Coax Connector

Subject: Re: [TowerTalk] Sealing Coax Connector
From: Roger D Johnson <>
Date: Thu, 14 Oct 2010 14:16:11 -0400
List-post: <">>
bob finger wrote:
> Two layers of 88t wrapped tight, then a layer of linerless rubber pulled 
> out until it is  grey wrapped tight then another layer of 88T.  Be sure 
> to tape so water runs away from the wraps, not into them.  73 bob de w9ge
Here is the method we used in the Coast Guard for shipboard connectors:

A better method for environmental sealing to protect against the weather 
(as practiced by the U.S. Navy) is as follows:
A layer of ScotchTm 3M type 79 self-fusing tape wound with a 50% overlap 
an stretched while being applied.
A Layer of ScotchTm 3M type 33+ Vinyl tape wound with a 50% overlap an 
stretched while being applied, followed
by a similar layer wound in the opposite direction. (also at a stretched 
- 50% overlap). 3) A sealant layer of Scotchkote
Liquid Vinyl is applied overlap the layer of 33 tape. ScotchkoteTm has a 
MEK solvent which melts into the surface of the
33+ tape to form a continuous layer of vinyl material. This type of 
sealant procedure can be applied over any type of
connector including heat-shrink boots to protect the  polyolefin 
material against UV rays), although in this latter case only
the 33+ and Scotchkotem is needed to provide a protective an flexible layer.

73, Roger


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