On Tue, 9/6/16, Bill greatketch@yahoo.com [amelyachtowners] <amelyachtowners@yahoogroups.com> wrote:

Subject: Re: [Amel Yacht Owners] what type of product to put on bolt attaching the windlass to deck?
To: amelyachtowners@yahoogroups.com
Date: Tuesday, September 6, 2016, 10:04 AM


 









If your intent is to take it
apart every two or three years to clean salt build up from
between the deck and the windlass housing as recommended by
Lofrans, pretty much anything will probably work.
 
I assume the deck
plate is stainless, as well as the bolts, so in this case
you are protecting against two issues, galvanic corrosion
and "galling" or "cold welding".
 
Most kinds of
stainless steel can exist in two forms "active"
and "passive" depending on the availability of
free oxygen.  These two forms are quite far apart on the
galvanic scale.  When stainless on stainless threads are
wet it sets up a good environment for active and passive
forms to exist close to each other and potentially cause
issues.  For this reason using a product that excludes
water from the joint is a good idea. Lanocote, tef-gel,
Never-Seez, or standard waterproof greases would all do this
for a least a couple years. 
A simple way to think about
stainless galling is that under very high pressures the
protective surface oxide layer rubs off, the
"pure" metal underneath "melts" into
itself and the parts become welded together.  In preventing
this, in my experience, Lanocote is good, Tef-Gel and
Never-Seez are better.  Some greases are good, some not so
much, at this.
So...
 All told my recommendation would be either tef-gel or
never-seez, and I'd know I could get them apart at any
time in the future with no problems. On my boat I'd most
likely use tef-gel only because it lives in my rigging tool
bag, while the never-seez lives in the engine
room!
Bill
KinneySM#160 HarmonieNarragansett Bay,
RI, USA



On Sep 6,
2016, at 09:37, Alexandre Uster von Baar uster@rocketmail.com
[amelyachtowners] <amelyachtowners@yahoogroups.com>
wrote:
















 






Good morning,



To make story short, I removed the windlass, etc.



What type of product would you put on the bolts attaching
the windlass to the deck?

Lanocote? Marine grease?



one was extremely difficult to remove (4 hours) and i would
prefer avoid that in the future…



Thanks in advance,

Sincerely, Alexandre

SM2K #289 NIKIMAT

Club Nautico de San Juan, Puerto Rico
























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