Twin Tube Epoxy
(640-2313A)                Specifications             Faxback Doc. # 18007

Physical Properties - (uncured):

Color................................................................Clear
Mix Ratio by Volume....................................................1:1
Mixed Viscosity...........................................8,000-10,000 CPS
Working Time.....................................................3 minutes
Functional Cure..............................................45-60 minutes
Coverage (inches squared @ .010" thickness)............................216
Specific Volume.....................................23.7 inches tripled/lb
Volume Solids.........................................................100%


Performance Characteristics - (7 days Cured @ 75 degrees F.):

Adhesive Tensile Shear, ASTMD1002................................1,400 psi

Operating Temperature, Dry................................-40 degrees F to
                                                            +200 degrees F
Cured Density, ASTMD792..................................1.10gm/cm tripled
Cured Hardness, ASTMD2240..............................................85D
Dialectric Strength..........................................490 volts/mil

Chemical Resistance:  7 days room temperature cure
                      (30 days immersion @ 75 degrees F.)

Kerosene               VG        Methanol              F
Hydrochloric Acid      VG        Toluene               VG
Chlorinated Solvent    F         Ammonia               VG
10% Sulfuric Acid      VG        10% Sodium Hydroxide  VG

Key:  VG = Very Good    F = Fair    U = Unsatisfactory

NOTE:

Epoxies are very good in water, saturated salt solution, leaded gasoline,
mineral spirits, ASTM #3 oil and propylene glycol.  Epoxies are generally
not recommended for long-term exposure to concentrated acids and organic
solvents


(JLC-11/27/95)