[GreenKeys] Teletype Oil (Ad Nauseum)

[Christian Gauger-Cosgrove]

Though not the best source out there in the world, Wikipedia
specifically states silicone grease does not damage rubber (i.e. does
not swell it or soften it). On the otherhand rubber can be damaged by
hydrocarbon (oil) based greases. This I can state firmly (with my
chemistry knowledge) is true. Also, silicone grease is non-conductive.
Neither are flouroether greases.

My friend suggested silicone grease and flouroether grease as they're
very inert substances (flouroether grease can only be removed by
expensive, hard to find flourinated solvents) that are waterproof and
prevent the corrosion of the surfaces they cover. Plus their
non-volatility means they don't degrade over time, so if you somehow
forget about your teletype for a decade, you won't come back to a
solidified mass of "Yech! ...The hell is that?"

Too bad they cost a lot more then "normal" grease. Then again they
last a lot longer. So whether your time or your money is more valuable
to you is the question to consider.


Cheers,
Christian






On 17 August 2011 18:45, Richard Knoppow <1oldlens1 at ix.netcom.com> wrote:
>
> ----- Original Message -----
> From: "Steve Schlink" <sschlink at mindspring.com>
> To: <greenkeys at mailman.qth.net>
> Sent: Wednesday, August 17, 2011 3:37 PM
> Subject: Re: [GreenKeys] Teletype Oil (Ad Nauseum)
>
>
> "rubber" compounds are attacked by "silicones". The other
> concern about
> using silicone around electronics is that one of its
> properties is a very
> high dielectric strength. Given its propensity to creep,
> that could be a
> problem on the various contacts.
>
>     I think this is backwards. High dielectric strength
> means resisance to arcing, i.e., good insulating qualities.
> I think the bulk resistance of silicone rubbers is also high
> meaning it should be good stuff around contacts.
>
>         Not sure why we need anything different than has
> been used on them
> for the last 50 years.
>
> Steve
>
>    Well, consider that older lubricants had a strong
> tendency to become gummy and lose their lubricity. More
> modern lubricants are both better lubricators and last very
> much longer.
>    You want something that will maintiain efficient
> operation of the parts, reduce wear to a minimum, have a
> long operating life, and not damage anything. Modern
> lubricants do better at all of these than the older ones.
>
> --
> Richard Knoppow
> Los Angeles, CA, USA
> dickburk at ix.netcom.com
>
>
>
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