MIL-D-24709 DIMFAB 280
DIMFAB 280 is manufactured using a specific elastomeric compound that is designed to meet the MIL-D-24709 Type R-50-21/64 specification for Distributed Isolation Material (DIM). DIMFAB 280 is primarily used by the US Navy for vibration isolation applications in submarines and surface ships. Can be waterjet fabricated to any shape.
Durometer (Shore A): .45 (ASTM-D-2240)
Tensile Strength (psi): 1,800 (ASTM-D-412)
Ultimate Elongation: 350% (ASTM-D-412)
Specific Gravity: 450 degrees F
Weight (per 18" x 18" sheet): 6lbs
Compressive Strength (10,000psi): Shall Not Rupture
Deflection (50psi): .065" Max
Deflection (75psi): .075" Max
Resonant Frequency (25psi): 27Hz Max
Resonant Frequency (25psi): 22Hz Max
Drift (50psi 336 hours): .008"
Cold Compression Set: 35% Max