Description
LORD® Signlok™ 204 is an economical, two-component MMA structural adhesive engineered to bond prepared or unprepared metals and engineered plastics. As part of the proven Signlok series, it delivers excellent impact and peel strength while offering a cost-effective solution for production lines. Signlok 204 replaces welding, brazing, or riveting—improving efficiency and reducing total assembly costs.
Key Features & Benefits
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High strength on metals – strong adhesion to aluminum, stainless steel, and coated steels.
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Versatile substrate bonding – bonds to engineered plastics including XENOY®, polycarbonate, ABS, and acrylics.
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Reliable handling window – 4–6 minutes working time, 22–26 minutes to handling strength at 75°F.
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Non-sag formula – applies neatly on vertical or overhead surfaces.
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Environmental durability – resists dilute acids, alkalis, solvents, oils, moisture, salt spray, and indirect UV exposure.
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Tight tolerance bonding – no glass beads; ideal for close-fit joints where appearance matters.
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Value priced – economical choice within the Signlok line, with trusted performance.
Common Applications
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Sign frames, brackets, and enclosures
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Metal/plastic panel assemblies
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Transportation equipment
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General manufacturing stiffeners and reinforcements
Technical Specifications
| Property | Value |
|---|---|
| Mix Ratio (A:B) | 2:1 by volume |
| Work Time | 4–6 minutes @ 75°F (24°C) |
| Handling Strength | 22–26 minutes @ 75°F |
| Full Cure | 24 hours @ 75°F |
| Lap Shear Strength | 3400 psi (Aluminum), 2700 psi (Steel) |
| Peel Strength | 25–29 pli on aluminum |
| Service Temperature | -40°F to +300°F (-40°C to +149°C) |
| Appearance (Mixed) | Tan paste; cures tan to green |
| Packaging | 210 mL cartridge |
Data is typical and not to be used for specification purposes.
Compliance & Certifications
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UL 746C certified for polymeric materials in equipment.
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Meets common industry durability requirements for environmental exposure.
Compatible Substrates
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Aluminum, stainless, and coated steels
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Polycarbonate, ABS, acrylics, XENOY® thermoplastic alloys
Packaging & Ordering Info
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Cartridge size: 210 mL
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Part number: 3028420
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Ships with two static mixers included.
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Compatible with:
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Static Mixer Tip: MedMix MCQ-08-24T-12 / 3001173
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Applicator Gun: Newborn 3-202-XSP / 3029937
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Explore the Signlok Family
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Signlok 403 – fast-curing, precision bondline control
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Signlok 406 – medium set with extended shelf life
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Signlok 810 – ACM panel bonding with low read-through
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Signlok 7550 Ultra Clear – optically clear urethane for trimcap and potting
Contact Chemical Concepts for technical support, application guidance, or bulk pricing on LORD Signlok 204 and other structural adhesives.
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