Loctite AA 3494 Light Cure Adhesive

LOCTITE AA 3494 is an impact-resistant clear light cure acrylic adhesive engineered for maximum efficacy in bonding, potting, or sealing glass to itself or other materials. This industrial-grade adhesive permanently joins substrates within seconds of light exposure, preventing costly bond failure and structural separation caused by prolonged humidity or water immersion. Whether you are securing rough surface decorative glass or molded glass tableware and automotive lighting components, this premium one-part system provides a robust, leak-proof seal on all compatible substrates—including plastics, ceramics, and metals.

Why Choose LOCTITE AA 3494?

• High-Speed Cure on Demand: Cures in seconds upon exposure to ultraviolet radiation of 365nm to form an impact-resistant bond.
• Excellent Optical Quality: Provides high transparency and low yellowing for cosmetically critical glass applications.
• Environmental Resiliency: Exhibits excellent resistance to prolonged humidity or water immersion once fully cured.
• Very High Viscosity: The 6,000 mPa·s non-runny liquid formula allows for excellent control during potting and sealing applications.
• Broad Temperature Stability: Maintains performance across a comprehensive temperature service range of -75 °C up to 175 °C.

Technical Specifications

• Product Type: Ultraviolet (UV) / Visible Light Acrylic Adhesive
• Strength: High Shear Strength (2,440 psi)
• Color: Clear
• Container Size: 25ml
• Certifications: Henkel LMS Quality Standards (Dated March-4, 1998)

Simple Application Instructions

1. Clean: For optimal results, bond surfaces should be clean and completely free from grease. This product is light sensitive; keep exposure to daylight and artificial lighting to a minimum during handling.
2. Apply: Dispense the liquid adhesive using applicators equipped with black feedlines to protect the product. Apply the required amount to the target bondline gap or potting area.
3. Assemble: Assemble the parts as required. The formula will begin curing once exposed to UV light (minimum intensity of 40mW/cm² recommended at the bondline for 5–6 times the 8-second fixture time). Allow bonds to cool completely before subjecting them to service loads.

Frequently Asked Questions (FAQ)

What is LOCTITE AA 3494 used for?

LOCTITE AA 3494 is a high-viscosity light cure adhesive designed for bonding, potting, and sealing. It is specifically formulated to prevent glass assemblies, automotive lighting, and decorative tableware from failing due to moisture, impact, or environmental stress.

Can LOCTITE AA 3494 be disassembled?

No, it creates a highly permanent, impact-resistant structural bond. Any excess uncured adhesive can be easily wiped away with an organic solvent like Acetone, but fully cured material must be removed using severe mechanical means or specialized chemical stripping.

Does LOCTITE AA 3494 work on plastics?

Yes. LOCTITE AA 3494 offers robust performance across glass, ceramics, and metals, and is well suited to plastics. However, individual plastic grades should be checked beforehand for any risk of stress cracking when exposed to the liquid adhesive.

Is LOCTITE AA 3494 safe for highly oxidizing systems?

No. LOCTITE AA 3494 is not recommended for use in pure oxygen and/or oxygen-rich systems. It should never be selected as a sealant for chlorine or other strong oxidizing materials.