Henkel Adhesive Technologies
Universal Structural Bonder 


Product category: Structural adhesives

Data sheets

Product information

LOCTITE® HY 4090 is a high viscosity, off-white to light yellow gel. It opens completely new application areas in structural bonding – for the very first time combining instant adhesive properties with those for epoxies to give more striking benefits. Fixture time of 90 - 180 seconds and suitable for gaps up to 5 mm. Resistant to vibration, shock loads and impacts with the ability to bond dissimilar substrates.

Best application results are achieved with LOCTITE® 50 ml Adhesive Mixing Nozzle (item 1826921), LOCTITE® 400 ml Adhesive Mixing Nozzle (item 1573135), LOCTITE® 96001 (item 267452) or LOCTITE® 983439 (item 218311).

Application method: 

Dispense Gun


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

Hardener: Color:

Off White

Hardener: Viscosity, cone & plate, @ 25.0 °C:

25000.0 mPa·s (cP) - 40000.0 mPa·s (cP)

Mix ratio, by weight:

1 : 1

Mixed: Color:

Off White

Mixed: Key characteristics:

Cure Speed: Fast Cure,Gap Filling,Humidity Resistant,Impact Resistant,Moisture Resistant,UV Resistant,Vibration Resistant,Viscosity: High Viscosity

Mixed: Operating temperature:

-40.0 °C - 300.0 °C (-40.0 °F - 284.0 °F)

Number of components:

2 Part

Physical form:


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

Resin: Color:


Resin: Viscosity, cone & plate, @ 25.0 °C:

4000.0 mPa·s (cP) - 7000.0 mPa·s (cP)

Shear strength, Steel (grit blasted):

17.0 N/mm² (2420.0 psi)

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