The O-Ring 016-713P73 is a nitrile rubber O-ring with an inside diameter of 0.16 inches, an outside diameter of 0.25 inches, and a width of 0.06 inches. It has a durometer hardness of 70A and a temperature range of -30°F to +200°F. This O-ring is black in color and meets military specification MIL-P-25732 and is made in the USA by Marco Rubber. It can be used for static applications and has good resistance to oils, fuels, and many chemicals. This O-ring comes in a pack of 10 pieces.