Twin Tube Epoxy
(640-2313A)               Application Information     Faxback Doc. # 18005

Surface Preparation:

5-Minute Epoxy works best on clean surfaces.  Surfaces should be
solvent-wiped, free of heavy deposits of grease, oil, dirt or other
contaminants, or cleaned with industrial cleaning equipment such as vapor
phase degreasers or hot aqueous baths.  Abrading or roughing the surfaces
of metals will increase the microscopic bond area significantly and
optimize the bond strength.

Mixing:

Proper homogeneous mixing of the two epoxy components of resin and hardener
are essential for the curing and development of stated strengths.  Always
mix the two components with clean tools,  preferably of a disposable
design.

Application:

Apply mixed epoxy directly to one surface in an even film or as a bead.
Assemble with the mating part within the recommended working time.  Obtain
firm contact between the parts to minimize any gap and ensure good contact
of the epoxy with the mating part.  A small fillet of epoxy should flow out
the edges to show there is adequate gap filling.  For very large gaps,
apply epoxy to both surfaces and spread to cover the entire area, or make
a bead pattern which will allow flow throughout the joint.  Let bonded
assemblies stand for the recommended functional cure time before handling.
They are capable of withstanding processing forces at this point, but
should not be dropped, shock loaded, or heavily loaded.

Cure:

Cure time for this Epoxy is 3/4 to 1 hour for a functional cure.  Full bond
strength is reached in 16 hours.

Storage and Shelf Life:

This Epoxy should be stored in a cool, dry place when not used for a long
period of time.  A shelf life of 3 years from date of manufacture can be
expected when stored at room temperature, 70 degrees F, in their original
containers.


(JLC-(11/27/95)