Loctite Hysol 4090

Sale price$40.00


Loctite 4090 Hysol Epoxy

  • Shear Strength, Grit Blasted Steel : 2420 psi
  • Temperature : 22 - 302 °F
  • Viscosity : 120 mPa.s (cP) Brookfield
  • Key Substrates : 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
  • Color : White: Off White, Yellow: Light Yellow
  • Curing Type : Room temperature cure after mixing
  • Application : Bonding

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).

  • High moisture resistance
  • Vibration, shock loads and impact resistance
  • Temperature resistance up to 150 °C
  • Gap filling up to 5mm
  • UV resistant allowing outdoor applications
HY 4090™ is a two component, general purpose
adhesive which provides a very fast fixture at room
temperature. It is designed to bond a variety of substrates
including metals, most plastics and rubbers. LOCTITE®
4090™ provides good temperature and moisture resistance
which also makes it suitable for applications in high
temperature/humidity environments. The thixotropic nature
makes it suitable for applications where good gap filling
properties on rough and poorly fitting surfaces are required

An ISO 10993 Test Protocol is an integral part of the Quality
Program for LOCTITE®
HY 4090™. LOCTITE®
HY 4090™ has
been tested to Henkel's test protocols based on ISO 10993
biocompatibility standards, as a means to assist in the
selection of products for use in the medical device industry.
Certificates of Compliance are available on Henkel's website or
through the Henkel Quality Department

Curing is initiated on mixing the Part A and Part B components.
Handling strength is achieved rapidly; full strength is achieved
over time.
Cure Speed vs. Substrate

The rate of cure will depend on the substrate used. The graph
below shows the shear strength developed with time on steel
lap shears compared to different materials and tested
according to ISO 4587.
Cure Speed vs. Bond Gap

The rate of cure will depend on the bondline gap. The following
graph shows the shear strength developed with time on grit
blasted mild steel lap shears at different controlled gaps and
tested according to ISO 4587
Cure Speed vs. Temperature

The rate of cure will depend on the ambient temperature. The
graph below shows the shear strength developed with time at
different temperatures on grit blasted mild steel lap shears and
tested according to ISO 4587.

This product is not recommended for use in pure oxygen
and/or oxygen rich systems and should not be selected as
a sealant for chlorine or other strong oxidizing materials.
For safe handling information on this product, consult the
Safety Data Sheet (SDS).
Where aqueous washing systems are used to clean the
surfaces before bonding, it is important to check for
compatibility of the washing solution with the adhesive. In
some cases these aqueous washes can affect the cure and
performance of the adhesive.
Directions for use:

  1. Bond areas should be clean and free from grease. Clean
    all surfaces with a Loctite®
    cleaning solvent and allow to
  2. To use, Part A and Part B must be blended. Product can
    be applied directly from dual cartridge by dispensing
    through the mixer head supplied.
  3. 50g Dual Cartridge: Stand dual cartridge upright for 1
    minute. Keeping the cartridge in an upright position,
    insert it into the application gun, remove cap and expel a
    small amount of adhesive to be sure both sides are
    flowing evenly and freely. Attach the mixing nozzle.
  4. 400g Dual Cartridge: Stand dual cartridge upright for 1
    minute. Remove the cartridge cap and locking ring,
    attach the mixing nozzle and secure with the locking ring.
    Load cartridge into the application gun so that the yellow
    label on cartridge is visible above the nozzle. Holding the
    application gun at a 45° angle, with the nozzle tip pointing
    upwards, begin dispensing the adhesive until the product
    reaches the nozzle tip.
    NOTE: A pneumatic application gun is required to apply
    the product from the 400g dual cartridge at a maximum
    dispense pressure of 2 bar (30 psi).
  5. Dispense and discard a bead as long and as wide as the
    mixing nozzle, to ensure sufficient mixing.
  6. Apply the mixed adhesive to one of the bond surfaces to
    be joined. Parts should be assembled immediately after
    the mixed adhesive has been applied.
  7. Bonds should be held fixed or clamped until adhesive has
  8. Keep assembled parts from moving during cure. The bond
    should be allowed to develop full strength before
    subjecting to any service load.

Loctite Material Specification

LMS dated May -27, 2013 (Part A) and LMS dated June-10,
2013 (Part B). Test reports for each batch are available for the
indicated properties. LMS test reports include selected QC test
parameters considered appropriate to specifications for
customer use. Additionally, comprehensive controls are in
place to assure product quality and consistency. Special
customer specification requirements may be coordinated
through Henkel Loctite Quality

Store product in the unopened container in a dry location.
Storage information may be indicated on the product container
Optimal Storage: 8 °C to 21 °C. Storage below 8 °C or
greater than 28 °C can adversely affect product properties.
Material removed from containers may be contaminated during
use. Do not return product to the original container. Henkel
Corporation cannot assume responsibility for product which
has been contaminated or stored under conditions other than
those previously indicated. If additional information is required,
please contact your local Technical Service Center or
Customer Service Representative.
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