Loctite 403 Cyanoacrylate Instant Adhesive 20g

Loctite 403 Cyanoacrylate Instant Adhesive 20g is a medium viscosity low odor ultra clear instant adhesive engineered for maximum efficacy in rapid bonding. This industrial-grade adhesive permanently bonds components, preventing costly cosmetic damage and assembly failures caused by high-vapor or high-blooming standard cyanoacrylates. Whether you are securing precise electronics components or general industrial parts, this premium instant glue provides a robust, clean seal on all key substrates—including metals, plastics, and elastomers.

Why Choose Loctite 403 Low Odor / Low Bloom?

• Low Odor: Specially formulated for applications where vapor control is difficult or vital for worker comfort.
• Low Bloom: Eliminates the white, powdery residue common with standard super glues, making it ideal for high-end cosmetic applications.
• Porous Material Compatibility: Particularly well suited for bonding absorbent substrates such as wood, paper, leather, and fabric.
• Rapid Fixturing: Achieves a functional fixture time quickly under normal atmospheric moisture conditions.
• Reliable Strength: Delivers a high shear strength of 2600 psi on grit-blasted steel once fully cured.

Technical Specifications

• Product Type: Cyanoacrylate Instant Adhesive
• Strength: High (2600 psi shear strength on grit-blasted steel)
• Color: Ultra Clear / Transparent and Colorless
• Container Size: 20g
• Viscosity: 1200 mPa.s (cP) Brookfield

Simple Application Instructions

1. Clean: For optimal results, bond areas should be clean and free from grease. Clean all surfaces with a Loctite® cleaning solvent and allow to dry.
2. Apply: Apply the adhesive to one of the bond surfaces. Do not use items like tissue or a brush to spread the adhesive, and do not apply it to an activated surface if a Loctite® Activator was used.
3. Assemble: Assemble the parts within a few seconds. The parts should be accurately located, as the short fixture time leaves little opportunity for adjustment. Hold fixed or clamped until the adhesive has fixtured.

Frequently Asked Questions (FAQ)

What is Loctite 403 used for?

Loctite 403 is a medium viscosity instant adhesive designed for the rapid bonding of a wide range of materials. It is specifically formulated to prevent cosmetic blooming (frosting) and strong chemical odors in work environments where vapor control is difficult.

Can Loctite 403 parts be adjusted during assembly?

Generally, no. Loctite 403 features a short fixture time that leaves very little opportunity for adjustment once the surfaces are brought together. Parts should be accurately located before mating.

Does Loctite 403 work on porous surfaces?

Yes. Unlike many standard thin instant glues, Loctite 403 is particularly suited for bonding porous or absorbent materials such as wood, paper, leather, and fabric.

Is Loctite 403 safe for oxygen-rich environments?

No. This product is not recommended for use in pure oxygen and/or oxygen-rich systems and should not be selected as a sealant for chlorine or other strong oxidizing materials. Always consult the Safety Data Sheet (SDS) for comprehensive safe handling information.