The NBR (Buna) O-ring has a 744.40 MM inner diameter and a 6.99 MM cross-section, crafted from 70 durometer Nitrile rubber. This O-ring is designed for high-performance sealing applications, providing excellent resistance to oils, fuels, and other chemicals. Its robust construction ensures durability and reliability in various environments. Ideal for use in hydraulic and pneumatic systems, this O-ring meets industry standards for quality and performance, making it a perfect choice for engineers and maintenance professionals.