LOCTITE® AA 3851 LC is a clear, low-viscosity, UV and visible-light curing acrylic adhesive designed for high-speed bonding of plastics, metals and glass. It offers rapid fixture, strong adhesion and excellent cosmetic clarity for precise assemblies.
LOCTITE® AA 3851 LC is engineered for applications that demand fast curing, reliable adhesion and a transparent bondline. Its low viscosity allows it to flow easily into tight clearances and narrow bond gaps, making it particularly effective for small components or assemblies with close tolerances. When exposed to UV or visible light, the adhesive cures quickly, achieving handling strength in seconds and supporting efficient manufacturing throughput.
The LC designation ensures a low-chlorine formulation, which is essential for sensitive assemblies such as electronics, medical devices and components where ionic contamination must be strictly controlled. The cured adhesive is clear and strong, offering reliable performance on plastics, metals and glass. This makes LOCTITE® AA 3851 LC suitable for precise, cosmetic and high-reliability assemblies across multiple industries.
Cure method: UV or visible light
Viscosity: low, suitable for wicking and capillary action in close-fitting joints
Appearance: clear before and after cure
Bond characteristics: strong, durable, transparent
Compatible substrates: plastics, metals, glass
Typical use cases: small component assembly, electronics, transparent housings, medical device bonding, plastic to metal and plastic to glass bonding
Primary Chemistry:
Acrylic ester, light cure
Prevents delays caused by slow curing or multi-component adhesives. Avoids incomplete bonding in tight or narrow bondlines by flowing effectively into small gaps. Eliminates the need for multiple adhesive types when bonding diverse substrates. Maintains cosmetic integrity in clear or visual components. Supports cleanliness requirements in electronics and medical device applications with a low-chlorine formulation.
Apply LOCTITE® AA 3851 LC to clean and dry surfaces. Assemble components and expose the adhesive to UV or visible light to achieve rapid cure. The low viscosity helps ensure full bondline coverage, even in narrow or preassembled joints. Suitable for electronics, optical systems, medical devices, transparent components and applications where fast cure, precision and clarity are essential.
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