[TowerTalk] Lube om Hose clamps

[K8RI]

On 2/1/2013 9:49 AM, john at kk9a.com wrote:
> The shelf life of Silicone caulk products may vary widely. I have been
> using GE Silicone II which seems to hold up well in the North Carolina
> sun. I have read numerous reports of it not curing when used past its
> expiration date. Here is one example:
> http://www.shopfloortalk.com/forums/showthread.php?t=30191 I always buy
> fresh tubes. Placing the tubes in a hermetically sealed mayonnaise jar on
> Funk and Wagnall's porch may not increase the life of some formulations.
>

  GE and DC RTVs are virtually identical as GE reverse engineered DC's 
"as the story goes"  Both are very UV resistant.  I've never seen either 
deteriorate in many years of exposure, or in UV accelerated aging.

They are the only real Silicone RTVs and sealing them up, before and 
after opening will greatly increase the useful life.  AFAIK they only 
fail shelf life one way. they cure solid in the tube.  I've never seen 
on of these fail to cure.

The only one failing to cure were latex and I don't know who made them.

I worked for DC and/or a subsidiary for over 33 years.

73

Roger (K8RI)


> John KK9A
>
>
>
> To:	towertalk at contesting.com
> Subject: Re: [TowerTalk] Lube om Hose clamps
> From:	 K8RI <K8RI-on-TowerTalk at tm.net>
> Date:	 Tue, 29 Jan 2013 13:49:57 -0500
>
>
> Silastic(TM) is a Dow Corning brand of Room Temperature Vulcanizing
> (RTV) Silicone. When used out doors and in a non confined space and
> particularly on steel or SS it matters not whether it uses acetone, or
> alcohol for a curing agent. Don't use it inside connectors or on
> electronic circuits.
>
> I've used it on PL259s (outdoors) with no adverse effects, but it can
> make them a bitch to get apart so I'd use something else there.
>
> As far as I know GE reverse engineered DC's stuff so they are the same
> as DC's RTV. DAP purchased the DC line years back, although I think DC
> still produces it for them (not positive about that)
>
> DAP also has a line of Latex RTVs so read the labels carefully and don't
> get them mixed up.
>
> BTW as these RTVs use water vapor to cure they are water proof, but not
> absolutely moisture proof. OTOH very little vapor gets through
>
> NOTE RTVs have a shelf life and once a tube is opened they don't
> normally last very long.
>
> I discovered that by placing tubes (whether they've been opened or not,
> but with the caps still tight) if you place then in a tightly sealed
> Tupperware" container they will last a very long time. I have some that
> has been opened that is over 20 years past the expiration date that is
> still good. I purchased a lot of it at the company store many years ago
> including high temp and conductive versions.
>
> 73
>
> Roger (K8RI)
>
> To:	towertalk at contesting.com
> Subject: Re: [TowerTalk] Lube om Hose clamps
> From:  kk9a
> Date: Tue, 29 Jan 2013 13:28:28 -0500
>
> Also watch the date on the tubes.  Expired silicone caulk may not
> harden.
>
>
>
>
>
>
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