"James" wrote in message

Any ideas on this, on the best way to seal the crack ?? Should I be
trying
to seal it from the inside, or the outside, or both ?? Is there a better
product for this application , other than Water Plug ??


Inside is always best. What caused the crack? Will it get worse or have a
catastrophic failure? Most sealers last for a time but eventually let go
again. Consider some sort of lining, maybe a fiberglass lay-up with
polyester resin or epoxy.