Explore our beta site

Are you an Industrial Manufacturing or Industrial Maintenance and Repair professional? Explore our brand-new beta site for a customized experience. 

Browse Now

LOCTITE® 402 Instant Adhesive

Features and Benefits

A fast-fixturing, ultra-performance instant adhesive that provides reliable performance under extreme operating temperatures up to 275°F.
LOCTITE® 402 is a high temperature and fast-fixturing instant adhesive (industrial grade) that reliably and strongly bonds to a wide range of plastic, rubber, and metal substrates. It is ideally suited for the joining of small parts in high-speed production applications as well as quick, on-the-go repairs. Using the primer LOCTITE® SF 770, the assembly of difficult-to-bond (PP, PE, PTFE) materials is possible.
  • Ultra-performance adhesive providing high temperature resistance (up to 275°F) with fast fixture
  • Ideal for quick repairs as well as high speed production applications
  • Unique, patented formula with reduced hazardous ingredients
  • Assembles difficult-to-bond materials using LOCTITE® SF 770 primer
Read More

Documents and Downloads

Safety Data Sheets and RoHs
LOCTITE® 402, 500 g Bottle 2712746 en-US
IDH: 2712746
EAN: 4058093037737

Size Case: 500 g Bottle

Quantity: 4.0/case

LOCTITE® 402, 20 g Bottle 2714628 en-US
IDH: 2714628
EAN: 4058093034811

Size Case: 20 g Bottle

Quantity: 12.0/case

No documents found

Technical Information

Application method Dispense System, Manual
Applications High Speed Production Bonding, Repairing
Color Clear
Cure type Moisture Cure
Fixture time, Steel (grit blasted) 20.0 sec.
Gap fill 0.15 mm
Key characteristics Fast Setting, For Difficult-to-Bond Materials, Temperature Resistant
Operating temperature -40.0 - 135.0 °C
Physical form Liquid
Recommended for use with Elastomer, Metal, Plastic, Porous Surface
Shear strength, Mild Steel (grit blasted) >15.0 N/mm²
Viscosity 110.0 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 7458™ or 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.


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

Frequently Asked Questions