Loctite Ea 9490 4oz Underwater Repair 2part Epoxy



Loctite Ea 9490 4oz Underwater Repair 2part Epoxy

  • Key Substrates : Ceramic, Concrete, Metal, Plastic, Wood
  • Color : Green, White
  • Curing Type : Room temperature cure
  • Application : North America - Bonding

LOCTITE® EA 9490 is a green/white, 2-part, epoxy adhesive stick that cures underwater and will bond to most damp surfaces. The product repairs, fills, and seals holes, cracks, and worn surfaces. Furthermore, LOCTITE EA 9490 may be drilled, tapped, sanded, machined and painted after curing. Unaffected by chlorinated or salt water.

  • Cures underwater
  • Adheres to most damp surfaces
  • Suits repairing, filling and sealing tasks
  • Can be drilled, tapped, sanded, machined and painted
  • High strength
  • Unaffected by chlorinated or salt water
LOCTITE® EA 9490™ is a two-component, room temperature
curing epoxy adhesive used for high strength, permanent
bonding of metals, ceramics, concrete, wood and most plastics.
This product can withstand temperatures of up to 150°C (300F)
. LOCTITE® EA 9490™ works on both wet and dry surfaces
and sets up and cures underwater. This putty like material is
ideal for plumbing, irrigation and marine applications because it
is unaffected by chlorinated or salt water. Typical applications
include plugging and filling cracks, leaks and holes in pipes,
fitting tanks, valves and pumps, especially in plumbing
irrigation and marine applications where applications are

Cure Speed vs. Temperature

The graph below shows the shear strength developed with time
on grit blasted steel lap shears at different temperatures 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).
Directions for use:

  1.  CAUTION: Do not apply to surfaces above 66 °C (150F).
  2. Apply to clean and dry surface for best strength. LOCTITE®
    EA 9490™ can be applied to wet surfaces, but bond strength will be lower
  3. For maximum adhesion, clean and sand surface.
  4. Use gloves; do not mix with bare hands.
  5. Cut required amount of material from stick. Remove clear
    plastic wrapper from cut section.
  6. To mix, first twist the material to produce a spiral pattern of
    resin and hardener. Next, knead material for 2-3 minutes or
    until a uniform color is achieved.
  7. Firmly apply for patch, repair or bonding. When applying
    underwater, form material into a ball and push firmly onto
    surface to displace as much water as possible between
    adhesive and surface.
  8. For a smooth finish, wet a cloth or gloved finger with water
    and smooth.

Technical Tips for Working With Epoxies

Working time and cure depends on temperature and mass:
  • The higher the temperature, the faster the cure.
  • The larger the mass of material, the faster the cure.
To speed the cure of epoxies at low temperatures:
  • Store epoxy at room temperature.
  • Pre-heat repair surface until warm to the touch.
To slow the cure of epoxies at high temperatures:
  • Mix epoxy in small masses to prevent rapid curing.
  • Cool resin/hardener component(s).
Loctite Material Specification

LMS dated January-29, 2002. 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 Quality.

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

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