Universal Structural Bonder
LOCTITE® HY 4090
Product category: Structural adhesives
- Technical specifications
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).
Vibration, shock loads and impact resistance
Temperature resistance up to 150 °C
Gap filling up to 5mm
High moisture resistance
UV resistant allowing outdoor applications
Bonding Dissimilar Materials,Bonding Plastic,Bonding Rubber,Construction,Direct Bonding,Edge Bonding,Exterior Repairs,Interior Repairs,Structural Bonding
Room Temperature (Ambient) Cure,Two Component Mix
FEA (finite element analysis):
< 180.0 sec.
Hardener: Viscosity, cone & plate, @ 25.0 °C:
25000.0 mPa·s (cP) - 40000.0 mPa·s (cP)
Mix ratio, by weight:
1 : 1
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:
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: 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)
How to use
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.
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.
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.
A hybrid adhesive is a mix of two adhesive chemistries. For example, the LOCTITE® HY 4090 is cyanoacrylate/epoxy mix.
Yes, hybrids are two-part products. Bumping and purging ensures product is flowing from both sides and mix at the proper mix ratio.
LOCTITE HY 4090 is available in 50 g & 400 g dual cartridges. Nozzles and dispense guns are sold separately.
No, it is not recommended to use LOCTITE HY 4090 for bonding to glass.
Refrigerated storage is not required for this adhesive. Refer to the product TDS for recommended storage.
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