Buna-N Square Cord, Cross Section Actual 0.437 in, Overall Diameter 7/16 in, Color Black, Material Buna-N, Durometer 70A, Standard, Maximum Temperature 210 Degrees F, Minimum Temperature 0 Degrees F, Overall Length 50 ft, Tensile Strength 725 psi, Square, Abrasion Resistance Good, Chemical Resistance Fair, Oil Resistance Excellent, Water Resistance Good, Weather Resistance Fair, Cross Section Fractional 7/16 in