Plexus MA300 (30500) is a two-part 1:1 mix ratio, methacrylate adhesive designed for structural bonding of thermoplastic, metal, and composite assemblies. Combined at a 1:1 ratio, MA300 has a working time of 3 to 6 minutes and reaches approximately 500 psi in 12 minutes and 1000 psi in 15 minutes at 74°F (23°C). This product offers a combination of high strength and stiffness as well as the ability to bond a wide range of materials. Plexus MA300 is supplied in ready-to-use 50-ml and 400-ml cartridges, 5-gallon (20-liter) pails, or 50-gallon (200-liter) drums to be dispensed as a non-sagging gel.
Plexus MA300 replaces an older popular Devcon formula Plastic Welder (14320). It is the same formula inside, but is now branded under the ITW Plexus name.
Room Temperature Cure
Working Time 3 – 6 minutes
Fixture Time 12 – 15 minutes
Operating Temperature -67°F – 250°F (-55°C – 121°C)
Gap Filling 0.03 in. – 0.125 in. (0.75 mm – 3.2 mm)
Mixed Density 8.10 lbs/gal (0.97 g/cc)
Flash Point 51°F (11°C)
Excellent resistance to: Hydrocarbons, Acids and Bases (pH 3-10), Salt Solutions
Susceptible to: Polar Solvents, Strong Acids and Bases