Resin - Loctite 3491 Light Cure Adhesive - Part # 17944 - 1 Liter Bottle

Loctite 3491 Light Cure Adhesive - Part # 17944 - 1 Liter Bottle
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Loctite 3491 is a fast curing, medium viscosity UV light cure acrylic-based adhesive designed for bonding glass-to-glass and to a variety of other surfaces. Loctite 3491 is a high transparency, low yellowing adhesive that cures in seconds upon UV light exposure of 365nm to form an impact resistant bond.

Typical Usage: Typical applications include bonding and sealing or potting applications of glass to itself or other materials, such as rough surface decorative glass, molded glass tableware items or automotive lighting components. Well suited to plastics, ceramics, glass, and metals.

  • High-speed cure on demand
  • High transparency and low yellowing
  • Medium viscosity
  • Exhibits excellent resistance to prolonged humidity or water immersion
  • 1-part system
  • Tack free time: 15 seconds
  • Fixturing time: 12 seconds
Other Known Part Numbers:
  • 142886
Loctite 3491 - 1 Liter Adhesive MSDS (PDF)

Loctite 3491 - 1 Liter Adhesive TDS (PDF)

Loctite 3491 - 1 Liter Adhesive RoHS Compliance Letter (PDF)

  • Technology: Acrylic
  • Chemical type: Modified acrylate
  • Color/Appearance: Transparent Liquid
  • 1 or 2 Part: 1 (no mixing)
  • Tensile Strength: 3,700 PSI at break
  • Viscosity Cp: Medium, 750 to 1,500
  • Specific Gravity: 1.03
  • Durometer/Hardness: 75 D
  • Cure benefit: Production - high speed curing
  • Application: Bonding, potting or sealing


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CureUV offers Loctite brand Light Cure adhesives compatible with substrates made of ceramic, composite material, concrete, fabric, glass, metal, paper, plastic, polycarbonate, PVC, rubber, wood, and more.

These UV-curable adhesives dry in seconds or less upon exposure to long-wave ultraviolet light and/or visible light. Loctite adhesives use UV light to initiate curing and form a permanent bond without heating. Loctite brand adhesives are optimal for high-speed applications.