O-Ring Assortment SAE Material Buna N Number of Pieces 70 Number of Sizes 7 Durometer 90 Shore A Hardness Very Hard Sizes Included AS568A Dash No (10) Each of 210 214 219 222 225 228 232 Case Type Plastic Box with Lid Chart Meets/Exceeds ASTM D2000 SAE J200 Temp Range -25 Degrees to 250 Degrees F Color Black