LOCTITE® HY 4090 Universal Structural Bonder
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 5mm (0.2"). Resistant to vibration, shock and impact, it 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.
- Vibration, shock and impact resistant
- High temperature- and moisture-resistance
- UV-resistant for outdoor applications
- Fixture time: 90-180 secs
- High shear strength
- Viscoelastic & Finite Strain FEA data cards available
Documents and Downloads
Looking for a TDS or SDS in another language?
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 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
What is a "hybrid" adhesive?
Is it important to bump and purge the cartridge before using?
What pack sizes is LOCTITE HY 4090 available in? What comes in the package?
Can LOCTITE® HY 4090 be used for bonding glass?
Is refrigerated storage required for LOCTITE HY 4090?
LOCTITE® HY 4090
A high viscosity, 2-part hybrid universal structural bonder with excellent humidity and vibration resistance.