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LOCTITE 404 Instant Adhesive

Known as LOCTITE 404 Quick Set Instant Adhesive

Features and Benefits

Low viscosity, liquid ethyl cyanoacrylate adhesive designed for bonding of plastics and elastomeric materials where very fast fixturing is required.
LOCTITE® 404 is a transparent, colorless to straw colored, low viscosity, liquid ethyl cyanoacrylate adhesive designed for bonding of plastics and elastomeric materials where very fast fixturing is required. It has been qualified to Commercial Item Description A-A-3097 (Note: This is a regional approval).
  • Fast fixturing
  • Qualified to Commercial Item Description A-A-3097 (This is a regional approval)
  • Designed for bonding of plastics and elastomeric materials
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Technical Information

Agency Approvals / Specifications Commercial Item Std. A-A-3097
Application Method Manual
Applications Bonding Plastic, Bonding Rubber
Color Clear
Cure Type Moisture Cure
Fixture Time, Steel 20.0 sec.
Gap Fill 0.15 mm
Key Characteristics Viscosity: Low Viscosity, Fixture: Very Fast Fixture
Operating Temperature -40.0 - 180.0 °F (-40.0 - 80.0 °C )
Physical Form Liquid
Shear Strength, Mild Steel (grit blasted) 3500.0 psi (24.0 N/mm² )
Specific Gravity, @ 25.0 °C 1.09
Substrates Plastic, Elastomer, Rubber
Technology Cyanoacrylate
Viscosity 90.0 mPa·s (cP)

How to

Step by Step Guide

1. Preparation - Cleaning

It is recommended to use the correct LOCTITE® cleaner for the surface to be bonded (such as LOCTITE® SF 7070™) to degrease and clean surfaces prior to applying the adhesive.

2. Preparation - Priming

To improve adhesion on difficult to bond plastic surfaces, apply LOCTITE® SF 770™ to the bond area by brushing or dipping. Avoid applying excess primer. Allow the primer to dry.

3. Preparation - Activation

If cure speed is too slow, use appropriate activator LOCTITE® SF 7452™ (see cure speed vs activator graph in TDS). Apply activator to one bond surface by spray, brush or dipping (not primed surfaces). Allow the activator to dry.

4. Application

Apply adhesive onto one side/part.

5. Assembly

Assemble parts immediately. The parts should be accurately located as the short fixture time leaves little opportunity for adjustment. Bond should be held or clamped until the adhesive has fixtured. Hint: if necessary, excess product can be cured by activator LOCTITE® SF 7458 or LOCTITE® SF 7452. Spray or drop activator onto excess product.

Equipment

For precise dispensing of small amounts of adhesive, the use of dispensing needles is recommended.

Frequently Asked Questions