even listings that say "marine" are in no way claiming they are saltwater animal safe. only that a marine environment will not destroy the bond that compound has created between the parts of broken equipment. having used jb weld before i can tell you it would not go into my system. it is a chemical reaction that causes the two part solution to become a one part "fix" for engine blocks and other metal surfaces. claiming any of these items is "safe" is just not a good idea. have they worked for some? sure, but some people also get away with all silica sand in a reef. others cram six tangs in a 30 gallon. does it work? well it does till it doesn't. why are we not using Cyanoacrylate and at at most even weldon (which is still questionable to me)? this is a skimmer, not a pressure rated piece of equipment. it does not need all that, just something to fill the crack up. if it is more than a crack it might just need to be pitched and a new one purchased.
1.)here is jb weld resins hazard chems...
Calcium Carbonate 40-50% 1317-65-3 ACGIH: TWA 10 mg/m
3
OSHA: PEL 15 mppcf
Iron Powder 10-20% 65997-19-5 ACGIH TLV 15 mg/m
3
OSHA: PEL 15 mppcf
Epoxy Resin 30-40% 25068-38-6 N/E
Aromatic Hydrocarbons 1-5 % 64742-94-5 N/
2.)here is the hardener hazard chems....
Calcium Carbonate 30-40% 1317-65-3 ACGIH TWA 10 mg/m
3
OSHA PEL 15 mppcf
Barium Sulfate 20-30% 7727-43-7 ACGIH TWA 10 mg/m
3
OSHA PEL 2 mppcf
Magnesium Silicate 5-10% 14807-96-6 ACGIH TWA 2 mg/m
3
OSHA PEL 20 mppcf
Titanium Dioxide 1-5% 13463-67-7 ACGIH TWA 10 mg/m
3
OSHA PEL 20 mg/m
3
Zinc Sulfide 0-5% 1314-98-3 ACGIH TLV 10 mg/m
3
Furfuryl Alcohol 1-5% 98-00-0 ACGIH TWA 10 ppm
Polyamide Resin 15-25% 68410-23-1 N/E
Aminophenols 1-5 % Mixture N/E
3.)here is waterwelds.....
Ingredient Name CAS Number Percent TSCA
Glycidyl ethers of bisphenol A resins 25068-38-6 10 - 30 Y
HMIS Health: 2 Fire: 1 Reactivity: 0 PPI: B
Tri(dimethylaminomethyl)phenol 90-72-2 0.5 - 1.5 Y
HMIS Health: 3 Fire: 1 Reactivity: 1 PPI: D
Zinc sulfide 1314-98-3 0.5 - 1.5 Y
HMIS Health: 1 Fire: 0 Reactivity: 0 PPI: E
*** ALL Ingredients in this product are listed in the T.S.C.A. Inventor
please note the resin (#1) does nothing until added to the hardener (#2.) Tri(dimethylaminomethyl)phenol (in waterweld) is a immunotoxin by itself.....
Reply With Quote
