The Freudenberg-NOK NBR O-Ring measures 3.484" in diameter and features a 0.139" cross-section with a 70 durometer hardness. This high-quality Nitrile Butadiene Rubber (NBR) material ensures excellent resistance to oils and fuels, making it ideal for various industrial applications. The O-Ring is designed to meet industry standards, ensuring reliable sealing performance in demanding environments. Its compatibility with a range of systems enhances its versatility, making it suitable for use in hydraulic and pneumatic applications.