Product Description
LORD® SL403/21 is a two-component acrylic adhesive system designed to deliver high-performance bonding for a wide range of sign and architectural substrates. Engineered for structural bonding applications, SL403 resin combined with LORD 21 accelerator offers excellent strength, fast fixture times, and superior adhesion to bare, coated, or painted metals, plastics, and composites.
This 210ml cartridge is ideal for medium to large-scale projects where consistent bead application and reduced downtime are essential. The SL403/21 system is especially effective in bonding aluminum, stainless steel, acrylic, and polycarbonate used in channel letters, ACM panels, and other structural sign assemblies. Minimal surface preparation is required, streamlining your production process while maximizing reliability.
Key Features:
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Two-component structural acrylic adhesive (SL403 + 21 Accelerator)
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High-strength bonding to metals, plastics, and composites
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Minimal to no surface preparation needed
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Fixture time: 10–14 minutes
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Mix ratio: 1:1
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Cartridge Size: 210ml
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Excellent environmental and impact resistance
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Compatible with manual or pneumatic 210ml dispensers and static mixing nozzles
Perfect For:
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Architectural panel bonding
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LED channel letter assembly
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ACM cladding systems
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Sign frame construction
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Mixed-material bonding
