UltraLok 420GB Structural MMA Adhesive Black

Description

Description

UltraLok 420GBis a two-part, fast-set structural methacrylate adhesive designed to bond metals, plastics, and composites with speed, strength, and simplicity. Competing directly withASI MP 55420,3M DP8405NS, andSciGrip SG5000-03, UltraLok 420GB delivers robust performance at a more economical price point.

Formulated with integrated glass beads to maintain bondline thickness and prevent over-clamping, this adhesive cures quickly at room temperature and requires no surface prep. Ideal for high-throughput assembly environments where repeatable strength and application speed are critical.

See It in Action

Key Features and Benefits

• Fast Working Time:37 minute open time for efficient processing

• Glass Bead Technology:Creates uniform bondlines and stronger joints

• Ultra-Strength:Tensile strength of 2,5003,500 psi on steel and aluminum

• Durable & Impact Resistant:Resists vibration, weathering, and temperature fluctuations

• No Surface Prep Required:Bonds through oils and light surface contamination

• Tack-Free Surface:Allows clean sanding and over-painting

• Color Options:Available in Grey, Black, and Natural

• Flexible Packaging:50ml, 250ml, 500ml cartridges, pails, and drums

• Made in the USA:Supported by Chemical Concepts technical team

Common Applications

• Metal cabinet and frame assembly

• Plastic panel bonding

• Composite repair and lamination

• HVAC and enclosure systems

• Sign manufacturing and display fabrication

• Vehicle body panel and trailer fabrication

Technical Specifications

Property	Value
Mix Ratio (by volume)	10:1
Open/Working Time	37 minutes
Fixture Time	915 minutes
Tensile Strength	2,5003,500 psi
Shear Strength	>2,500 psi
Temperature Resistance	-40F to +250F
Gap Fill	Up to 0.25 inches
Mixed Viscosity	70,00090,000 cps
Mixed Density	8.1 lbs/gal (0.96 g/cc)
Available Colors	Grey, Black, Natural
Packaging Sizes	50ml, 250ml, 500ml, pails, drums
Shelf Life	12 months at room temp (77F)
Cure Profile	Room temperature
Surface Prep	Not required
Flash Point	51F (11C)

Ultralok 400 Series Comparison Chart

Product	Open Time	Fixture Time	Recommended Use	Colors	Available Sizes
Ultralok 420GB	37 min	915 min	Fast assembly, metal & plastic	Grey, Black, Natural	50ml, 250ml, 500ml, pails, drums
Ultralok 421GB	812 min	2030 min	Medium cure for positioning	Grey, Black, Natural	50ml, 250ml, 500ml, pails, drums
Ultralok 422GB	1824 min	3045 min	Large parts, high-temp environments	Grey, Black, Natural	50ml, 250ml, 500ml, pails, drums

Compatible Substrates

Metals:

• Aluminum

• Steel

• Stainless steel

• E-coated metals

Thermosets:

• Fiberglass

• Gel coats

• Phenolics

• Epoxies

• Polyurethanes

Thermoplastics:

• ABS

• PVC

• Acrylic

• Polycarbonate

• Nylon

• PPO

• Styrenes

• PET & PBT blends

Packaging and Ordering Info

• Cartridge Sizes:50ml, 250ml, 500ml

• Bulk Sizes:5-gallon pails and 55-gallon drums

• Mix Tip Recommendation:MFHX 10-18T(18-element orange)

Also available in:

• UltraLok 421GB Medium-Set (812 min)

• UltraLok 422GB Slow-Set (1824 min)