Justsaws
Addicted to ArboristSite
I have used a two part stick epoxy called Magic Bond Putty(I think) with get success. The original batch was a Devcon(I think) product, I do not remember the latest batch. It comes in a plastic tube around 1" x 9" with plastic cap on one end. Cut off the required amount and kneed it until mixed and stick it on. It sticks well for what it is and has been used on oil/diesel/gas/water tanks (plastic and metal). Good quick fix until later. The original batch cured much faster but all held in place under reasonable pressure until fully cured. Small holes with no pressure increase back in service in 30 minutes or less.