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Thanks Sean,
That might be just what I need. I don't need a lot
of it for the actuators.
I used to spray my old wetsuit with silicone, it
was the only way I could get it on
or off. ( it must have shrunk over
time.)
Alan
----- Original Message -----
Sent: Wednesday, September 30, 2009 10:40
AM
Subject: Re: RE: [PSUBS-MAILIST] WD 40
compensating oil
I have long been a fan of silicone oils for hydraulic power transmission,
dielectric, and compensating applications in submersibles. Regardless of
whether you have oil systems inside your passenger compartment, the reality is
that you will likely be unable to completely avoid incidental contact with oil
during pre-dive procedures (filling compensators, venting air, etc.).
Hydrocarbon vapours in an enclosed space are risky both because of toxicity,
and because of flammability (elevated in the case of WD40), and the subsequent
toxicity of the products of combustion in the event of a fire. Using
silicone oils instead of petroleum oils eliminates these risks. The only
real drawbacks are cost and availability if you have specific viscosity
requirements.
-Sean
On Sep 29, 2009, Emile van Essen
<emile@airesearch.nl> wrote:
Alan,
What is a
vail? One way plastic bottle? Till now I have good result with WD40
and plastics.
New
material:
Somebody ever
considered Silicone DOT 5 brake fluid as used on motorbikes? Yes, DOT4 is
aggressive for paint etc. DOT 5 not and is thin as water.
First drawback is
that it is expensive..
Emile
I was experimenting with various
organic oils & WD 40
for oil compensating my motors
& linear actuators.
I had a number of differant oils
in small plastic vials
& was mixing them with water
to see how it separated out.
Just found that after a couple
of months the vial with the
WD 40 in it went soft, cracked
& leaked. Can't tell
you
what the plastic was but its got
me looking for alternatives.
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