LOCTITE® AA 3926 LC BO 1 L is a high-viscosity, one-component light-curing acrylic adhesive designed for bonding plastics, glass, ceramics and metals. It cures rapidly under UV or visible light, delivering flexible, clear bonds with low yellowing and deep cure penetration.
Viscosity (uncured): high viscosity, acrylic-based (Brookfield RVT, 25 °C) ~ 3 000–8 000 mPa·s
Specific gravity @ 25 °C: ~ 1.08
Cure method: UV / visible light exposure
Fixture time: ~ 3 seconds under optimal light intensity (on glass/plastic surfaces)
Depth of cure: > 13 mm under suitable light and exposure conditions
Bondable materials: Plastics (including stress-sensitive), metals, glass, ceramics
Special properties: Low yellowing, fluorescent under UV for quality control, ISO 10993 biocompatible variant (suitable for medical-device assemblies)
Primary Chemistry:
Acrylic ester, light-cure adhesive
LOCTITE® AA 3926 LC BO 1 L is formulated for high-speed, precision bonding where flexibility, clarity and reliability are essential. Its high-viscosity acrylic base ensures controlled dispensing and minimises flow or run-off — a particularly useful property when working with small components or stress-sensitive plastics. When exposed to suitable UV or visible light, the adhesive cures quickly (fixture in around 3 seconds under optimal conditions) and builds a strong, flexible bond that remains clear and resists yellowing. The adhesive is suitable for use across a wide range of materials including plastics, glass, metals and ceramics. It is particularly suited to applications such as medical devices (cannulas, syringes, lancets), transparent housings, glass-plastic assemblies and other precise or cosmetic-sensitive components. The LC (low-chlorine) variant supports use in sensitive electronics or device manufacturing where contamination control is critical.
Viscosity (uncured): high viscosity, acrylic-based (Brookfield RVT, 25 °C) ~ 3 000–8 000 mPa·s
Specific gravity @ 25 °C: ~ 1.08
Cure method: UV / visible light exposure
Fixture time: ~ 3 seconds under optimal light intensity (on glass/plastic surfaces)
Depth of cure: > 13 mm under suitable light and exposure conditions
Bondable materials: Plastics (including stress-sensitive), metals, glass, ceramics
Special properties: Low yellowing, fluorescent under UV for quality control, ISO 10993 biocompatible variant (suitable for medical-device assemblies)
Primary Chemistry:
Acrylic ester, light-cure adhesive
Eliminates slow cure cycles that can slow down production lines
Avoids bond failures or yellowing in assemblies exposed to sunlight or ageing
Prevents adhesive overflow or contamination in delicate or small-scale assemblies
Reduces complexity by removing need for multiple adhesives when bonding different materials
Meets stringent contamination and cleanliness requirements for medical, electronic and clean-room applications
Apply LOCTITE® AA 3926 LC BO 1 L to clean, dry substrates (plastics, glass, metal or ceramics). Assemble parts as required. Expose the adhesive joint to suitable UV or visible light to initiate curing. The high viscosity ensures the adhesive remains in place during assembly and cures to a clear, flexible bond. Particularly effective for bonding stress-sensitive plastics, medical components (cannulas, syringes, lancets), transparent housings, glass-plastic assemblies, and small precision parts. The LC version supports cleanroom, electronics and medical-device requirements where low contamination is critical.
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