Compound# SU43445

40-50 Durometer, Shore A, Neoprene. The physical characteristics of the rubber shall meet the following minimum requirements:
Durometer Hardness, Shore A 40 50 ASTM D2240
Specific Gravity 1.1 1.14 ASTM D297
Tensile Strength, (PSI) 2000   ASTM D412
Ultimate Elongation (%) 350   ASTM D412
300% Modulus (PSI) 750   ASTM D412
Compression Set   30% ASTM D395, Method B, 22 hours at 70°C, 25% deflection, 1/2 hour recovery
Water Absorption
After aging in air at 70°C, +/-2°C for 22 hours +/-0.25 hours
  10% by weight ASTM D471, 166 hours at 70°C, +/-1°C Distilled Water
Oxygen Bomb Again
(% Change in Tensile Strength)
80% of Original   ASTM D572, Aged 48 hours at 70°C at 300 PSI O2 in Pressure Vessel
Low Temperature Brittleness All Pass with No Cracks   ASTM D2137, Method A, Parameter 9.3.2; 5 Modified T-50 Specimens, 3 min at -40°C