{Stus-List} Sealants

Dennis C. captbuy at yahoo.com
Thu Jun 11 10:54:03 EDT 2009

Alcohol cleans up 5200 nicely with little to no residue.  Might work on 4200 as well.  Haven't try that.

Dennis C.
Touche' 35-1 #83
Mandeville, LA

From: dwight veinot <dwightveinot at hfx.eastlink.ca>
To: cnc-list at cnc-list.com
Sent: Thursday, June 11, 2009 8:24:37 AM
Subject: Re: {Stus-List} Sealants

Varsol cleans up Sikaflex and 3M 4200 and 5200 pretty good.  I would rather
use it than acetone on my boat.  

I don't use silicone sealant on anything on my boat; I have bad experiences
with its lasting adherence except where it isn't wanted and I would judge it
a poor bedding compound.  I prefer Sikaflex 295 UV but I did find a use for
3M 5200 on my boat (contrary to popular opinion).  I used it to fabricate my
cabin top mounted instrument pod which is made of white plexi pieces held
together with 5200 and some stainless screws.  It takes about a week to cure
and I needed to clamp pieces in place and it does run and seems to yellow a
bit in the sun.  I know 4200 comes in a fast cure version, I tried some but
I have very good luck with Sikaflex, 295 UV is what I use, even at nearly
$20 Cdn per tube, but I have been able to use the same tube even months
after it was first opened...sometimes I just cut the tube and take the
product out with a putty knife if it is too hard to get it to squeeze
out...OK for some jobs.

All are messy to work with so I always have Varsol and lots of rags
ready...I reglazed 2 large hatches this year with 295UV black and they
turned out great.  Time will tell more but they don't leak yet. 

Dwight Veinot
1974 C&C 35, Alianna
Head of St. Margaret's Bay, NS

-----Original Message-----
From: cnc-list-bounces at cnc-list.com [mailto:cnc-list-bounces at cnc-list.com]
On Behalf Of Hoyt, Mike
Sent: June 11, 2009 7:31 AM
To: cnc-list at cnc-list.com
Subject: {Stus-List} Sealants

Venting some frustration here....

Has anyone else noticed a marked increase in availability of BLACK in
silicon and adhesive sealants this year?

It is messy and ugly.  In some products teh colour is not even on the front
of the package!

Bought a squeeze tub of 3M 5200 last year for work with a garbord drain.
Went to use it this season and it is BLACK - I didn't even know they made it
in black.  Not only that it is not fast cure so it drips everywhere - yuck!

Went to buy a tube of 3M 4200 for a caulking gun.  All they had at that
store was BLACK in both 4200 and 5200 - so I had to go elsewhere.  That
store always had only white before.

After buying Sikaflex and 4200 in white elsewhere (and looking very
carefully) I was looking for marine silicon for bedding instruments.  Picked
up a tbe of Sikiflex (I think 291 but not sure).  read fron to packaging
very carefully and it had all the properties I wanted.  Again - it was
BLACK.  A very small sticker on the back of the package states BLACK in very
small print.  I used it but it is messy to clean up and required Acetone to
get it off my bulkhead.  Thank goodness the instrument and compass I was
installing were both black.

Argh from Mike on Nut Case

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