The Freudenberg-NOK NBR O-Ring, measuring 0.139" in diameter and rated at 70 Shore A hardness, is designed for reliable sealing in various applications. Made from high-quality Nitrile Butadiene Rubber (NBR), this O-Ring offers excellent resistance to oils, fuels, and other chemicals, making it ideal for automotive and industrial uses. Its precise dimensions ensure a snug fit in standard grooves, providing optimal sealing performance. This product meets industry standards for durability and reliability, ensuring long-lasting performance in demanding environments.