MMA 422 Black Structural Adhesive for Flexible, Extended Working Time Applications

Infinity Bond MMA 422 Black is a flexible, long-working-time structural adhesive designed for bonding metals, plastics, and composites in demanding applications. With an 18 to 24 minute working time and a 10:1 mix ratio, it’s ideal for large parts, complex setups, or warmer environments where extended working time is critical. It forms high-strength, flexible bonds to stainless steel, aluminum, fiberglass, ABS, and more — all with minimal surface prep. The black pigment provides excellent visual contrast for part alignment, inspection, or cosmetic finish control.

Note: There is also an MMA 422 cream/off-white option for standard bonding applications.

Benefits & Features

• Extended Working Time: 18–24 minute working time for large or complex assemblies
• Flexible, Durable Bonds: Greater than 100% elongation for vibration and impact resistance
• Black Pigmented Formula: Improves visibility during alignment and cosmetic inspection
• Strong Adhesion to Difficult Substrates: Bonds fiberglass, metals, and engineered plastics
• Wide Gap Filling Capability: Fills bond lines up to 0.50 inches
• Compatible Sizes: Available in 50 ml and 490 ml cartridges for 10:1 dispensers

Specifications

• Series: MMA 422
• Type: Methyl Methacrylate Structural Adhesive
• Color: Black
• Mix Ratio: 10:1
• Substrates: Recommended for bonding Aluminum, Stainless Steel, Fiberglass, ABS, PVC, Acrylic, and other Engineered Plastics
• Working Time: 18 to 24 minutes (at 75°F / 24°C)
• Fixture Time: 35 to 50 minutes (at 75°F / 24°C)
• Can Be Moved In: 45 to 60 minutes
• Operating Temperature: 65°F to 85°F (18°C to 30°C)
• Gap Filling: Up to 0.50 inches
• Mixed Density: 8.1 lbs/gal (0.96 g/cc)
• Elongation: Greater than 100%
• Flash Point: 51°F (11°C) – See SDS for full safety information
• Cartridge Size: 50 ml and 490 ml
• Shelf Life: 1 Year (unopened at room temperature)

Note: Not recommended for low energy surfaces like polyethylene or polypropylene.