bisugo767 : I might try the more speciality hardware stores instead of Home Depot or Canadian Tire.
[I:
I found it in Home Depot's Electrical section, near the tape, as "liquid insulation". [/I]
"The primary reason I wanted to rubberize or plasticize by weights is because I want to minimize wear on my suit's waist area when I am wearing them.
That would be fewer psi, true; but over a larger area, still crushing ( and chafing ) what is about the same volume of neoprene.
Also, I would like to do my part in protecting the Ocean by minimizing or even eliminating the leakage of lead powder or filings that comes from pouches of lead shot or bare naked lead bricks.
I agree with your preservational view, but don't think the solid lead weights' erosion is significant. If ANY erosion is significant, then the solid weights' lower surface area ( less erosive potential ) and abrasion ( as shot pellets do tend to grind against each other ) would cause the solid weights to be preferable to the shot.