Originally Posted by Al_The_Man  They are buried in a water velocity sensor below dams, about 150ft down.
Al. |
Polyester and water don't get along really well, Al. Are you sure this will work?
Or are you saying your mold will be Bondo, not the parts? <= this is likely the answer.....
What about using a potting epoxy? Something like ChockFast Orange? (this would be a good potting compound for extreme environments, by the way)
Scott