ES6240 Toughened, High Peel Strength Epoxy Adhesive


ES6240 is a two component toughened epoxy adhesive with very good cured properties that provides excellent bonds to a variety of substrates. Its blend of high lap shear and T-Peel values allow superior performance in demanding bonding applications. ES6240 adheres very well to wood, metal, composites and some plastics. The bonded components exhibit tough and durable performance for long term stability in use.

 ES6240 A
ES6240 B
ASTM Method
ColorWhiteTranslucent Amber
28,000 cps
42,400 cps Gel
Specific Gravity, gms./cc
Mix Ratio, by Weight
100 : 48
Pot Life, 4 fl oz Mass @ 77°F
40 – 45 min.


Preparation: All surfaces to be bonded or patched must be free of dirt, oil and grease. The better the
surface prep, the better the results! Sanding or roughening the area to be bonded increases the surface area and enhances the bond. See PTM&W Bulletin “Guidelines for Metal Surface Preparation” for more information.
Mixing: Measure out equal parts of ES6240 A and B, combine, and mix thoroughly until a uniform color and consistency is reached. Mix for at least 1 to 2 minutes, scraping the sides and bottom of the container to avoid leaving unmixed material that will cause soft spots in the cured material.
Application & Curing:  Apply mixed material to roughened area of the parts to be bonded. Press
surfaces firmly together and let set for 24 hours or more at 75°F. If necessary, place assembly in a jig or other device to prevent movement during initial curing time. Curing time is 24 to 36 hours at 75° F, or 2 to 4 hours at 140°F. The material to be bonded may be preheated to accelerate curing time, or very light heat can be applied after the parts have been bonded.


Quart Kit
Gallon KitPail Kit
ES6240 Part A2 lb.8 lb.
40 lb.
ES6240 Part B
1 lb.
4 lb.
20 lb.
Kit4 lb.
12 lb.
60 lb.

Inasmuch as PTM&W Industries, Inc. has no control over the use to which others may put material, it does not guarantee that the same results as those described herein will be obtained. The above data was obtained under laboratory conditions, and to the best of our knowledge is accurate. This information is presented in good faith to assist the user in determining whether our products are suitable for his application. No warranty or representation, however is intended or made, nor is protection from any law or patent to be inferred, and all patent rights are reserved. Before using, user shall determine the suitability of the product for his intended use, and user assumes all risk and liability whatsoever in connection therewith. In no event with PTM&W Industries, Inc. be liable for incidental or consequential damages. Buyer’s sole and exclusive remedy in such instances shall be limited to replacement of the purchase price.

 ES6240 A/B
ASTM Method
Mix Ratio, by Weight
100 : 48
Mixed Viscosity, @77°F, centipoise
72,000 cps
Pot Life, 4 fl. oz. Mass @ 77°F
40 – 45 min.
Cured Hardness, Shore D
84 Shore D
Specific Gravity, grams, cc
Density,  lb./cu in,  lb./gallon
Specific Volume,  cu. in./lb.
Tensile Strength, psi 
7,458 psi
Elongation at Break, % 25.2 %
Tensile Modulus, psi
317,075 psi
Flexural Strength, psi 11,505 psi
Flexural Modulus, psi
Compressive Strength, psi
6,500 psi D695
Lap Shear, 2024-T3 Aluminum, ASTM 2651 FPL Etch
4,009 psi
Glass Transition Temp., DMA. Tg Peak


PTM&W epoxy products are made from raw materials carefully chosen to minimize or even eliminate toxic chemicals, and therefore offer the user high performance products with minimum hazard potential when properly used.  Generally, the PTM&W epoxy resins and hardeners will present no handling problems if users exercise care to protect the skin and eyes, and if good ventilation is provided in the work areas.  However, all epoxy resins and hardeners can be irritating to the skin, and prolonged contact may result in sensitization; and breathing of mist or vapors may cause allergenic respiratory reactions, especially in highly sensitive individuals.  As such, avoid contact with eyes and skin, and avoid breathing vapors.  Wear protective rubber apron, clothing, gloves, face shield or other items are required to prevent contact with the skin.  In case of skin contact, immediately wash with soap and water, followed by a rinse of the area with vinegar, and then a further wash with soap and water.  The vinegar will neutralize the hardener and lessen the chances of long term effects.  Use goggles, a face shield, safety glasses or other items as required to prevent contact with the eyes.  If material gets into the eyes, immediately flush with water for at least 15 minutes and call a physician.  Generally, keep the work area as uncluttered and clean as possible, and clean up any minor spills immediately to prevent accidental skin contact at a later time.  Keep tools clean and properly stored.  Dispose of trash and empty containers properly.  Do not use any of these types of products until Material Safety Data Sheets have been read and understood.