(A) 5/16 in, Outside Dia. (F) 212 Degrees F, Durometer 60A, Elongation 260 Percent, Tensile Strength (PSI) 900 psi, Standards ASTM D2000 M6AA607, General Purpose, Package Quantity 25 (E) 3/4 in, Rubber Material SBR, MS 35489 Number 39, AN 931 Number A5-12, Rubber Color Black, Min.