MM-80 is the industry’s first standard heavy duty, semi rigid epoxy joint filler and remains today the “industry standard” in floor joint protection. MM-80 is designed to fill and protect saw cut contraction and construction joints in industrial concrete floors. MM-80’s Shore A Hardness of 90-95 ensures joint edge support and protection in even the most demanding, highly trafficked settings. For larger projects, MM-80 is also available in a specially rebalanced formula designed for use with dual component pumps. MM-80P is ratioed at 1:1 and packaged in 10 gallon bulk kits.