Description
UltraLok 420-1 is a two-part, flexibilized structural methacrylate adhesive designed for high-strength bonding of metals, composites, and engineered plastics. It is formulated for fast-paced manufacturing and assembly environments where rapid strength development, durability, and long-term performance are required.
UltraLok 420-1 offers a short working time and reaches handling strength quickly at room temperature. The adhesive provides strong yet flexible bonds that accommodate movement caused by vibration and differences in coefficient of thermal expansion between bonded substrates. The formulation contains no glass beads, allowing for thin bond lines and maximum surface contact.
UltraLok 420-1 requires little to no surface preparation and bonds aggressively to steel, stainless steel, aluminum, fiberglass, and many plastics.
Key Features & Benefits
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Two-part structural MMA adhesive
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10:1 mix ratio
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Fast working time for high-throughput production
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Rapid development of handling strength
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High ultimate strength with flexible bond properties
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No glass beads for thin, uniform bond lines
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Excellent resistance to impact, vibration, and weathering
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Minimal surface preparation required
Common Applications
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Composite panel bonding
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Metal fabrication and assembly
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Transportation and automotive components
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Marine and fiberglass assemblies
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Industrial equipment manufacturing
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Construction and architectural assemblies
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Sign fabrication and bonded metal panels
Technical Specifications
| Property | Value |
|---|---|
| Adhesive Type | Structural Methacrylate (MMA) |
| Mix Ratio | 10:1 |
| Color | Off-white |
| Working Time | 3 to 7 minutes |
| Handling Strength | 10 to 15 minutes |
| Full Cure | 24 hours at room temperature |
| Tensile Shear Strength | ~3,000 psi (substrate dependent) |
| Elongation | High, flexible bond |
| Surface Preparation | Minimal |
| Glass Beads | None |
| UV Stability | Not UV stable, yellows over time |
Note: Yellowing does not affect bond performance and is cosmetic only. UltraLok 420-1 is not recommended for applications requiring color stability or imperceptible seams.
Compatible Substrates
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Steel
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Stainless steel
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Aluminum
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Fiberglass
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Composites
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Acrylics
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ABS
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PVC
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Coated metals
Not recommended for low surface energy plastics such as polyethylene or polypropylene without surface treatment.
Packaging & Ordering Information
UltraLok 420-1 is available in the following cartridge sizes:
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50 mL
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250 mL
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500 mL
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825 mL
Bulk packaging options may be available upon request.
Comparable Products
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ASI MP55420
Dispensing Equipment & Mixing Nozzles
| Cartridge Size | Manual Dispensers | Pneumatic Dispensers | Mixing Nozzles |
| 500ml | VR400XSP DM2X400 |
VR400A83, DP2X400 | MFQX 08-24T, MFHX-10-18T |
| 250ml | VR210XSP, VR200XSP, B26T200X10, DM2X200 | VR200A83, DP2X200 | MFQX 08-24T, MFHX 08-18 |
| 50ml | CCH50G-10-1-B | CBA50 10:1 Ratio | MBQX 05-24L MBHX 05-16T |
Technical Support & Ordering Assistance
Chemical Concepts provides expert technical support, application guidance, and dispenser selection assistance. If you need help confirming compatibility, qualifying UltraLok 420-1 for your application, or pricing for volume orders, our team is ready to help.
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