LOCTITE® HY 4090 Universal Structural Bonder

Known as LOCTITE 4090

Features and Benefits

A high-viscosity, 2-part hybrid, universal structural bonder with excellent humidity and vibration resistance.
LOCTITE® HY 4090 is a fast and powerful, high-viscosity, off-white-to-light-yellow universal bonder. In the world of structural bonding, it is unique, combining strength and speed to provide powerful, long-lasting bonds. It has a fixture time of 90-180 seconds and is suitable for gaps up to 5 mm (0.2"). Resistant to vibration, shock and impact. Works with a wide range of substrates. For best results, use with LOCTITE® 50 ml Adhesive Mixing Nozzle, LOCTITE® 400 ml Adhesive Mixing Nozzle, LOCTITE® 96001, or LOCTITE® 983439.
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Technical Information

Application method Dispense Gun
Applications Bonding Dissimilar Materials, Bonding Plastic, Bonding Rubber, Construction, Direct Bonding, Edge Bonding, Exterior Repairs, Interior Repairs, Structural Bonding
Cure type Room Temperature (Ambient) Cure, Two Component Mix
FEA (finite element analysis) Finite Strain, Viscoelastic
Fixture time <180.0 sec.
Gap fill 2.0 mm
Mix ratio, by weight 1 : 1
Number of components 2 Part
Physical form Liquid
Recommended for use with Composite, Composite: Advanced Composites, Dry Surface, Elastomer: Highly Filled Elastomer, Epoxy, Fiberboard, Gel Coat, Laminate, Metal, Non-Gel Coat, Painted Surface, Phenolic, Plastic, Rubber, Thermoplastic, Thermoset, Urethane: Cast Urethane, Vinyl, Wood
Shear strength, Steel (grit blasted) 17.0 N/mm² (2420.0 psi )
Mixed
Color, Mixed Off White
Key characteristics, Mixed Cure Speed: Fast Cure, Gap Filling, Humidity Resistant, Impact Resistant, Moisture Resistant, UV Resistant, Vibration Resistant, Viscosity: High Viscosity
Operating temperature, Mixed -40.0 - 300.0 °C (-40.0 - 284.0 °F )
Resin
Color, Resin Clear
Viscosity, cone & plate, Resin @ 25.0 °C 4000.0 - 7000.0 mPa·s (cP)
Hardener
Color, Hardener Off White
Viscosity, cone & plate, Hardener @ 25.0 °C 25000.0 - 40000.0 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 7063 or SF 7070) to degrease and clean surfaces prior to applying the adhesive.

2. Preparation of Cartridge

Place cartridge in dispense gun. Remove cap from cartridge. Dispense a small amount so that material is coming out of both sides of cartridge. Attach mix nozzle and dispense a bead at least half of the length of the nozzle. The material is ready to use.

3. Application

Apply a bead of material to one of the surfaces to be bonded. Join the parts and fixture in a way to prevent movement of the part until handling strength is obtained.

Frequently Asked Questions