How to repair plastic seal for liquids used in human consumption?
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From: William Sommerwerck on 11 Apr 2010 07:13 > What is the best way to reseal this junction, but preserve > the requirement that the liquid in contact will be consumed > by humans? Silicone adhesives, as far as I know, are not particularly toxic in the first place, and I doubt a properly cured bond would leach. > Can food be placed in contact if I use superglue? Doubt it, but need > confirmation. Superglue isn't stable. It can be weakened simply by contact with water. I'm inclined to agree with the poster who suggested buying a new pot.
From: Robert Macy on 11 Apr 2010 13:45 On Apr 11, 4:13 am, "William Sommerwerck" <grizzledgee...(a)comcast.net> wrote: > > What is the best way to reseal this junction, but preserve > > the requirement that the liquid in contact will be consumed > > by humans? > > Silicone adhesives, as far as I know, are not particularly toxic in the > first place, and I doubt a properly cured bond would leach. > > > Can food be placed in contact if I use superglue? Doubt it, but need > > confirmation. > > Superglue isn't stable. It can be weakened simply by contact with water. > > I'm inclined to agree with the poster who suggested buying a new pot. not an option
From: Rich Webb on 11 Apr 2010 17:39 On Sun, 11 Apr 2010 10:45:28 -0700 (PDT), Robert Macy <macy(a)california.com> wrote: >On Apr 11, 4:13�am, "William Sommerwerck" <grizzledgee...(a)comcast.net> >wrote: >> > What is the best way to reseal this junction, but preserve >> > the requirement that the liquid in contact will be consumed >> > by humans? >> >> Silicone adhesives, as far as I know, are not particularly toxic in the >> first place, and I doubt a properly cured bond would leach. >> >> > Can food be placed in contact if I use superglue? Doubt it, but need >> > confirmation. >> >> Superglue isn't stable. It can be weakened simply by contact with water. >> >> I'm inclined to agree with the poster who suggested buying a new pot. > >not an option Short answer: GFGI Medium answer: A search of "food grade adhesive" turns up some likely candidates. This looks promising: <http://www.emisupply.com/catalog/su5005-food-grade-silicone-hitemp-103oz-cartridge-p-2284.html> -- Rich Webb Norfolk, VA
From: isw on 12 Apr 2010 03:27 In article <43g4s51k1pd9f746cltl4cucl3d5p2ekb7(a)4ax.com>, Rich Webb <bbew.ar(a)mapson.nozirev.ten> wrote: > On Sun, 11 Apr 2010 10:45:28 -0700 (PDT), Robert Macy > <macy(a)california.com> wrote: > > >On Apr 11, 4:13�am, "William Sommerwerck" <grizzledgee...(a)comcast.net> > >wrote: > >> > What is the best way to reseal this junction, but preserve > >> > the requirement that the liquid in contact will be consumed > >> > by humans? > >> > >> Silicone adhesives, as far as I know, are not particularly toxic in the > >> first place, and I doubt a properly cured bond would leach. > >> > >> > Can food be placed in contact if I use superglue? Doubt it, but need > >> > confirmation. > >> > >> Superglue isn't stable. It can be weakened simply by contact with water. > >> > >> I'm inclined to agree with the poster who suggested buying a new pot. > > > >not an option > > Short answer: GFGI Go to a pet store and get a tube of aquarium seal. It's a silicone adhesive (which of itself is totally nontoxic), plus whatever is used for a catalyst won't harm fish, even after very long exposure in non-changing water. If it won't hurt them, it sure won't hurt you. Clean all the surfaces with something like a "green scrubber", and apply the silicone as a decent-thickness fillet. You can smooth the stuff with a finger wetted with mineral spirits (which will evaporate by the time the silicone is cured). Isaac
From: bz on 12 Apr 2010 10:59
isw <isw(a)witzend.com> wrote in news:isw-5DD6AD.00274012042010@[216.168.3.50]: > In article <43g4s51k1pd9f746cltl4cucl3d5p2ekb7(a)4ax.com>, > Rich Webb <bbew.ar(a)mapson.nozirev.ten> wrote: > >> On Sun, 11 Apr 2010 10:45:28 -0700 (PDT), Robert Macy >> <macy(a)california.com> wrote: >> >> >On Apr 11, 4:13�am, "William Sommerwerck" <grizzledgee...(a)comcast.net> >> >wrote: >> >> > What is the best way to reseal this junction, but preserve >> >> > the requirement that the liquid in contact will be consumed >> >> > by humans? >> >> >> >> Silicone adhesives, as far as I know, are not particularly toxic in >> >> the first place, and I doubt a properly cured bond would leach. >> >> >> >> > Can food be placed in contact if I use superglue? Doubt it, but >> >> > need confirmation. ..... > > Go to a pet store and get a tube of aquarium seal. It's a silicone > adhesive (which of itself is totally nontoxic), plus whatever is used > for a catalyst won't harm fish, even after very long exposure in > non-changing water. If it won't hurt them, it sure won't hurt you. > > Clean all the surfaces with something like a "green scrubber", and apply > the silicone as a decent-thickness fillet. You can smooth the stuff with > a finger wetted with mineral spirits (which will evaporate by the time > the silicone is cured). > > Isaac In an aquarium, the sealant is not in contact with hot (near boiling) water. I would not rely on 'safe at room temperature' as an indication of 'safe at elevated temperatures' and would distrust any company that did so without extensive testing. -- bz 73 de N5BZ k please pardon my infinite ignorance, the set-of-things-I-do-not-know is an infinite set. |