PT2254 Epoxy Laminating System


PT2254 is a general purpose unfilled laminating system for use in fabricating tooling or structures that will operate at room temperature in service. This system has a low mixed viscosity which allows it to penetrate even the thickest reinforcing fabric easily, and provides dense, void-free laminates. The two hardeners designed for use with this resin have working times long enough to enable the user to fabricate structures of all sizes with ease. PT2254 Part B has a pot life of 45 to 50 minutes, and the Part B1 has a pot life of 100 to 120 minutes. Tooling and parts made with PT2254 are tough, stable and provide dependable long term service in demanding applications.

 PT2254 A
PT2254 B
PT2254 B1
ASTM Method
ColorLight Amber
1800 cps
1200 cps
200 cps
Specific Gravity, gms./cc
Mix Ratio, by Weight
 100 : 18
100 : 19
Pot Life, 4 fl oz Mass @ 77°F
 45 – 50 min.
110 – 120 min.


The PT2254 system will cure completely at normal ambient temperatures with either of the Part B hardeners. In warmer summer temperatures, when shop temperatures can get very high, the working time of these systems is still long enough to allow time to complete a project. In colder environments, make sure that the ambient shop temperature does not drop below 65°F to insure proper curing of the material. If the temperature is too low, the epoxy will remain in a partially cured condition, and the tool or structure might distort or be overly susceptible to damage. At the proper ambient temperature, PT2254 with Part B will cure sufficient for handling in 12 to 16 hours, and full cure is achieved in 24 hours. When using the Part B1, handling time will increase to 18 to 20 hours, and full cure can take slightly over 24 hours in cooler weather. As with most epoxies, this full cure can be accelerated with the addition of heat after the material has gelled at room temperature. If a heat cure is desired, make sure that the epoxy has gelled hard before placing in an oven, to prevent stress buildup or distortion due to rapid gelling under heat. A typical oven cure cycle would be 3 to 4 hours in an oven at 140°F to 165°F.


PailDrum Kit
PT2254 Part A
44 lb.
445 lb.
PT2254 Part B
8 lb.
2 @ 40 lb. ea.
PT2254 Part B1
8.5 lb.
2 @ 43 lb. ea.

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.

 PT2254 A/B
PT2254 A/B1
ASTM Method
Mix Ratio, by Weight
100 : 18
100 : 19
Mixed Viscosity, @77°F, centipoise,
1300-1500 cps
900-1000 cps
Pot Life, 4 fl. oz. Mass @ 77°F
45 – 50
110 – 120 min.
Cured Hardness, Shore D
81 Shore D
82 Shore D
Specific Gravity, grams, cc
Density, lb./cu inch,  lb./gallon
.0394,  9.1
.0394,  9.11
Specific Volume, cu. in./lb.
Tensile Strength, psi
7,380 psi
7,070 psi
Elongation @ Break % 
1.79 %
1.8 %
Tensile Modulus, psi
369,442 psi
339,350 psi
Flexural Strength, psi
13,737 psi13,715 psi
Flexural Modulus, psi
400,972 psi
391,806 psi
Compressive Strength, psi
11,697 psi
10,750 psi
Glass Transition Temp., DSC: Tg


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.