Military

Military Grade Urethane Products

Products manufactured by PSI Urethanes to be used by the military, can be certified to Military Specification MIL-DTL-83397B, as outlined by the Standardization Program put forth by the Department of Defense.

We manufacture custom molded parts, polyurethane sheets, and bond to metal for the military. Our bonding process is designed for extreme applications. Our custom engineered components are utilized in a vast array of applications.

Military applications demand materials that are capable of withstanding a wide range of severe conditions and extreme environments for extended measures of time. Durability, high performance, and reliability are of the utmost importance for materials.Urethane Technology has been the optimum choice for the military, due to strict guidelines and requirements. Consistently providing high-quality products is the foundation of PSI Urethanes.

The table below summarizes some of the physical property requirements for parts made from castable, general purpose polyurethane. It was pulled from the Defense Standardization Program (DSP) MIL-DTL-83397B document. (To access this spec sheet, please visit the ASSIST QuickSearch database.)

PROPERTIESREQUIREMENTS
Class 1
80 Hardness
Class 2
90 Hardness
Specific gravity *As DeterminedAs Determined
Tensile strength, psi (MPa), min.4000 (27.58)4500 (31.03)
Elongation, %, min.400300
Hardness, Durometer “A”, points80 ± 590 ± 5
Tear strength, psi (MPa), min80 ± 590 ± 5
Temperature retraction (TR-10) °F (°C), max.-45 (-42.8)-20 (-28.9)
After aging 22 ± .25 hours at 158° ± 2°F (70° ±1°C)s
Compression set, % max.3535
After aging 7 days at 212° ± 2°F (100° ± 1°C)
Tensile strength change, %± 20± 20
Elongation change, %± 20± 30
Hardness change, Durometer “A”, points± 5± 5
After aging 120 days at 160° ± 2°F (71° ± 1°C) and 95% Relative Humidity
Tensile strength change, %± 25± 25
Elongation change, %± 20± 20
Hardness change, Durometer “A”, points± 10± 10
After aging 4 days at 180° ± 2°F (82° ± 1°C) over water (short term test)
Tensile strength change, %± 20± 20
Ultraviolet resistance
Tensile strength change, %± 20± 20
Elongation change, %± 20± 20

*The permissible variation in specific gravity during actual production from that value established in production tests shall be ± .02.

Contact us today to learn how we can accommodate your MIL-DTL-83397B requirements.

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