Look for cold tar epoxy. R/Jay From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of Greg Cottrell Hi Frank, While I prefer plastic battery cases, the old-timers coating of choice to protect against strong acids is usually tar. It’s ugly and nasty to work with but resists acid, is flexible and sticks to everything. Greg C. |