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Hi Pierre.
McMaster-Carr (which is the manufacturer for the
cord grips in question) says that its nickel plated brass liquid tight cord
grips are usable in up to 300 ft of water. More than
enough for the scuba depths that you and I will go
to in our wetsubs Pierre. So I believe they would work for our applications.
However, before I buy any of their fittings I have a
few questions about their thru the hull fittings
that I would like answered.
Like for instance....on their stainless steel
fittings description they say.... "Made
of Type 303 stainless steel to provide strain relief for cables outdoors and in
other corrosive environments. Fittings also provide a seal against dirt,
moisture, coolant, and corrosive fumes. All include a zinc-plated steel washer,
neoprene bushing, Viton O-ring, and zinc-plated steel locknut (stainless steel
locknuts are sold separately). Temperature range is -40° to
+250° F. UL listed and CSA certified."
Now these
fittings are listed as, and susposed to be stainless steel. So why is it then
that the steel washer has to be zinc plated? And the steel locknut zinc plated
as well but you can purchase a stainless steel locknut for more
money????
It would seem
to me that if the fittings are listed as stainless steel, then they should be
ALL stainless. So how come the zinc plating? You don't need zinc plating on
stainless unless those parts are NOT stainless. In which case only part of
the
thru the hull
fitting would be stainless and the washer and locknut would be regular steel
with a zinc plating. At least that appears to be what it is saying, especially
since they tell you they offer a stainless steel locknut seperately (for more
money of course).
So if you
wanted all stainless I would e mail the company and clairify if the fitting is
ALL stainless steel and if not why then why do they list it as
stainless?
Also the only depth ratings they gave their fittings were for the nickel
plated brass ones up to 300 feet. They do not say what their depth rating is for
the nylon ones or any of the others. It would be worth it to drop them an e mail
to find out some answers
before purchasing, that is what I am going to do before I buy mine.
So on the one hand it would appear they are just
what we need, but a few questions need to be answered first.
Here is the link to their homepage. Click on the
link at the top that says "e mail" and it will open a page where you can type a
message to them and give your e mail so they can answer. They do not have their
e mail address listed directly, and
this appears to be the only way to e mail them.
Here's the link.... http://www.mcmaster.com/products.html?sesnextrep=503075273937970&version=1
Kindest Regards,
Bill Akins.
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