[TowerTalk] DC-4 or DC-5 ?

[Grant Saviers]

I use the auto store spark plug silicone goop on the threads of PL259 
connectors to help keep water out and make disassembly easier.  Nothing 
on the center pin (if I do it right).  All cables into PLs are sealed 
cable jacket to PL body with adhesive lined heat shrink.  (need to 
preheat the connector or get it hot enough for the adhesive to really 
bond).  All solder holes are filled with solder that wets to the 
center.  Then the Andrew/Commscope waterproofing technique goes over the 
connection if long term exposure is planned.

The small tear open packets are convenient and have enough grease for 
several UHF connections.

Grant KZ1W

On 7/9/2017 8:59 AM, Jim Thomson wrote:
> Which of the Dow corning products  would be best for coax connector center pins,
> and also on the threads of coax connectors ?
>
> http://www.dowcorning.com/applications/search/default.aspx?R=402EN  Scroll down a bit to get the pdf file.
>
> http://www.dowcorning.com/applications/search/default.aspx?R=12722EN  Pdf file is down a  bit.
>
> DC-4 might be better for threads...and DC-5  might be better for the center pin, dunno, it’s a  little confusing.
>
> DC-4 is good for spark plugs, which is hv.   Then DC-5 is made for HV.  yet the DC-4 has a higher standoff V, 1 kv per mil.
> DC-5 is  545 V per mil.
>
> I also need something to coat  the rubber gasket seals on several nema-4 boxes which will be outdoors.
>
> I might get one of each type, as I can see where this goop would work on a lot of items used both indoors and outdoors.
>
> Has anybody used either of these products...and what application did you use it ?
>
> Jim  VE7RF
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