Jobo Clear Silicon Sealant

On Wed, 11 Jan 2006 17:04:14 +0100,
(Ralf R. Radermacher) wrote:

Richard Knoppow wrote:

That sounds more like a Silicon grease than a sealer. The
stuff I mean cures to a sort of soft rubber.

I do indeed mean a product that cures to a somewhat rubbery consistency.

But I'd never call that silicon grease. In my understanding silicon
grease is the white greasy stuff that's put between semiconductors and
heat sinks.

Ralf


January 16, 2006, from Lloyd Erlick,

Silicone and silicon. Two different
substances?

Isn't silicone a marketing word relating to
those rubber-like caulking compounds? Do they
have anything to do with silicon?

My counter-top water distiller has a power
switch that shuts off when the temperature
goes too high (ie, when it boils dry). It
contacts the interior boiling tank by means
of a glob of white grease I take to be
silicon grease.

Aren't silicones those silly marketing silly
cones they used to depict on TV during
(silly) commercials for shaving products?

Tubes of silicone sealant or caulking
material are commonly available here at the
Home Depot Ironmongers.

regards,
--le
________________________________
Lloyd Erlick Portraits, Toronto.
voice: 416-686-0326
email:
net: www.heylloyd.com
________________________________
--

Lloyd Erlick wrote:

January 16, 2006, from Lloyd Erlick,

Silicone and silicon. Two different
substances?

Well, yes.

Silicon is an element and pure crystals can be made of it. IIRC, they are a
charcoal grey, but they may have been treated with something before I saw one.

Isn't silicone a marketing word relating to
those rubber-like caulking compounds? Do they
have anything to do with silicon?

Not exactly. Silicones are chain compounds a bit like hydrocarbons. But
where hydrocarbons have a chain of carbon atoms with stuff stuck on, such as:
H H
| |
H-C-C-O-H (ethanol)
| |
H H

Silicones have alternating silicon and oxygen atoms, thus:

H H
| |
H-Si-O-Si-O-H (I do not know if this one exists.)
| |
H H

I believe you can also make ring compounds with silicones, like benzene with
carbon.

My counter-top water distiller has a power
switch that shuts off when the temperature
goes too high (ie, when it boils dry). It
contacts the interior boiling tank by means
of a glob of white grease I take to be
silicon grease.

More likely to be a silicone grease.

Aren't silicones those silly marketing silly
cones they used to depict on TV during
(silly) commercials for shaving products?

Tubes of silicone sealant or caulking
material are commonly available here at the
Home Depot Ironmongers.

A friend of mine calls that business "Home Despot."

--
.~. Jean-David Beyer Registered Linux User 85642.
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/( )\ Shrewsbury, New Jersey http://counter.li.org
^^-^^ 09:10:00 up 17 days, 23:57, 3 users, load average: 4.30, 4.18, 4.15

Lloyd Erlick Lloyd at @the-wire. dot com wrote:

Silicone and silicon. Two different
substances?

Obviously yes. The German language distinguishes between "Silizium",
that's the chemical element and the material semiconductors are made of,
and "Silikon", the rubbery goo sold for a fortune by Jobo.

Ralf

--
Ralf R. Radermacher - DL9KCG - Köln/Cologne, Germany
private homepage: http://www.fotoralf.de
manual cameras and photo galleries - updated Jan. 10, 2005
Contarex - Kiev 60 - Horizon 202 - P6 mount lenses

"Lloyd Erlick" Lloyd at @the-wire. dot com wrote

Silicone and silicon. Two different
substances?

Silicon is a semi-conducting quasi-metallic element.
Silicon oxides make up most rocks, sand, glass etc.

Silicone is a compound based on silicon, such
as silicone oil/grease or silicone rubber.

Silicon is chemically similar to carbon and so
the same spectrum exists for carbon compounds:
diamond - coal - oil - rubbers and plastics.

The white silicone grease used for electronic
heatsinks has aluminum oxide powder added to
it to help conduct heat. Don't use it as a
lubricant, aluminum oxides are a component of
sandpaper.

I have seen grease and sealer marked both silicon
and silicone. It doesn't really matter, hard to
get sand confused with rubber.

--
Nicholas O. Lindan, Cleveland, Ohio
Consulting Engineer: Electronics; Informatics; Photonics.
To reply, remove spaces: n o lindan at ix . netcom . com
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