The Freudenberg-NOK O-Ring is crafted from durable NBR (Nitrile Butadiene Rubber) with a 70 durometer hardness, featuring a 0.139" cross-section and a 2.734" inner diameter. This O-Ring is engineered for optimal sealing performance in various applications, providing excellent resistance to oils and fuels. It adheres to industry standards, ensuring compatibility with a wide range of systems. Perfect for hydraulic and pneumatic uses, this O-Ring guarantees reliable sealing under pressure, enhancing the longevity and efficiency of your equipment.