Metzger McGuire MM-80 Standard Gray 1 Gallon

MM-80 is a 100% solids, two component, heavy duty semi-rigid epoxy joint filler designed to fill and protect contraction and construction joints in industrial concrete floors. MM-80 was developed to fill and protect joints in industrial concrete floors that are subject to hard wheeled material handling traffic and heavy loads. Its primary function is to support such traffic and protect joint edges. MM-80 is designed for use in areas where final temperatures are from 40˚F (10˚C) to +120˚F (49˚C).

Higher relative hardness for improved durability
Contains no VOC's, LEED compliant
Used widely for more than 45 years

$110.29

Drop Shipped

SKU

17824

Metzger McGuire MM-80 – Heavy-Duty Epoxy Joint Filler

Metzger McGuire MM-80 is the industry-standard, two-component, 100% solids semi-rigid epoxy joint filler developed for Class 6-9 industrial concrete floors. Formulated to protect joint edges under heavy loads and hard-wheeled traffic, MM-80 supports durable long-term performance in demanding environments. Its superior balance of hardness and flexibility helps prevent edge spalling while allowing for slight movement. MM-80 can also be used for crack repairs and is available in both standard and silicone-free versions, making it suitable for food, automotive, and regulated facilities. Trusted for over 45 years, it remains the reference epoxy joint filler used in ACI and PCA guidelines.

Key Features:

Heavy-duty epoxy joint filler for Class 6-9 concrete floors
Shore A hardness of 90–95 for optimal edge protection
Supports hard-wheeled traffic and heavy loads
Available in standard and silicone-free formulas
Accepted for use in USDA, FDA, and CFIA-regulated environments
Zero VOCs and compliant with LEED green building standards
Color: standard medium gray; custom colors available
Meets ACI 301-16, 302.1R-15, and PCA guidelines

Technical Specifications:

Property	Value
Hardness (Shore A)	90–95 (ASTM D2240)
Tensile Strength	1300 psi (ASTM D638)
Tensile Elongation	45–55% (ASTM D638)
Adhesion to Concrete	300–350 psi (ASTM D4541)
Pot Life	15–30 minutes at 70°F
Initial Cure	6–8 hours at 70°F
Traffic Ready	8–12 hours at 70°F
Mix Ratio (by volume)	5:1
Solids Content	100%
VOC Content	0 g/L
Shelf Life	12 months (unopened)

Frequently Asked Questions:

What is the primary use of Metzger McGuire MM-80?
It is used to fill and protect control and construction joints in industrial concrete floors subject to heavy forklift and wheeled traffic.

Can MM-80 be used in outdoor or expansion joints?
No. MM-80 is not recommended for true expansion joints, exterior applications, or joints subject to extreme chemical exposure.

Is MM-80 approved for use in food processing facilities?
Yes, MM-80 is USDA, FDA, and CFIA acceptable for use in regulated environments once cured.

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