Description
MMA 420 Black Flexible Methacrylate Adhesive for Fast-Set Applications
Infinity Bond MMA 420 Black is a fast-setting, flexible structural methacrylate adhesive designed for bonding metals, plastics, and composites in demanding applications. With a 10:1 mix ratio and working time of just 3 to 7 minutes, this adhesive is ideal for quick production environments or assemblies that require speed and strength. It forms durable, impact-resistant bonds to substrates like aluminum, stainless steel, ABS, and fiberglass all with minimal surface preparation. The black formulation enhances visibility for inspection, part alignment, or aesthetic integration.
Note: There is also an MMA 420 off-white option for standard bonding applications.
Key Benefits
- Fast-Setting Formula: 37 minute working time with fixture strength in 915 minutes
- Flexible Bond Line: Ideal for assemblies exposed to thermal cycling or vibration
- Black Pigment for Visual Control: Enhances visibility for inspection and alignment
- Strong, Durable Adhesion: Bonds metals, fiberglass, and engineered plastics with minimal prep
- Wide Gap Filling: Fills gaps up to 0.50 inches for uneven or rough bonding surfaces
- Available Sizes: Offered in 50 ml and 490 ml cartridges for use with 10:1 dispensers
Specifications
- Series: MMA 420
- 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: 3 to 7 minutes (at 75F / 24C)
- Fixture Time: 9 to 15 minutes (at 75F / 24C)
- Can Be Moved In: 15 to 20 minutes
- Operating Temperature: 65F to 85F (18C to 30C)
- Gap Filling: Up to 0.50 inches
- Mixed Density: 8.1 lbs/gal (0.96 g/cc)
- Flash Point: 51F (11C) 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.
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