[TowerTalk] [Bulk] Sealing Ends of Phillystran HPTG-1200

[Grant Saviers]

Water per se doesn't affect the Kevlar very much.  For instance, Kevlar 
lines are used for mooring offshore oil rigs. 
http://www.ultramarine.com/hdesk/document/kevlar.htm

Perhaps the concern is more what happens if trapped water freezes inside 
the Philly sheath, so it makes some sense to seal the ends. Kevlar is 
sensitive to UV, is not very abrasion resistant, and is subject to 
fatigue so running it over pulleys drastically shortens its life.  
Keeping the sheath intact is very important on Philly guys.

Grant KZ1W

On 5/24/2015 20:12 PM, J D Lambright wrote:
> I just finished assembling my M2 40M4LLDD 40 meter Yagi.  The element
> supports use Phillystran HPTG-1200.. I've heard that the inner fiber core
> of Phillystran is highly affected by water intrusion, but the manual makes
> no mention of sealing or capping the ends of the Phillystran.
>
> Do I need to seal or cap the ends to protect against water intrusion?  If
> so, what is the preferred way to do this?
>
> Thank you,
> J D Lambright - KF5U
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