The U704.00X280 Metric O-Ring by Freudenberg-NOK features a 280 mm inner diameter and a 4 mm cross-section, crafted from durable 70 durometer urethane. This O-ring is designed for high-performance sealing in various applications, providing excellent resistance to wear, chemicals, and temperature fluctuations. Its precise dimensions ensure a tight seal, preventing leaks in hydraulic and pneumatic systems. This product meets industry standards, making it a reliable choice for maintaining system efficiency and integrity.