THIS IS WHAT THE PROS USE..
TAP Super-Hard Epoxy
Fast setting epoxy for repairs, coating, and fiberglassing with superior surface hardness and excellent chemical resistance. Resists gasoline, corrosion, and acid. Great for tank linings, fume hoods, ducts, floors, and splash areas. Great adhesion, bonds metal, wood, fiberglass, concrete, and most plastics. 10 to 15 minute pot-life. Kit includes resin and hardener in a 4 to 1 ratio.
The kit is available in a 1 1/4 drum (50 gallon) size by phone order only: (800) 246-5055 Mon-Fri 9am to 5pm (PST).
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ITS $68.00 DOLLERS A GALLON SET-UP.BUT WILL NEVER CRACK...