We purchased some MG Chemical 8800 Flexible Polyurethane Potting Compound from Newark to see how well it would hold up.
I used an old prototype of the battery busbars and cell holders, and pretty much just poured the 2-part mixture over the top.
It was a not a very viscous liquid, and spread out very easily - which is good, since we want a thin layer over a large area. I also placed a piece of acetal on top to see how well it would stick. I mixed about 16mL of part A and 8mL of part B in the mixing cup and stirred for a minute or so before pouring it over the parts.
It requires 24h at room temp to cure, so we’ll have some results tomorrow.