The Freudenberg-NOK 4.00" 70 NBR NB7028 O-Ring is designed for robust sealing in various applications. Constructed from high-quality NBR material, it provides excellent resistance to oils, fuels, and chemicals, making it suitable for automotive and industrial uses. With dimensions of 6.00 mm in outer diameter and a durometer rating of 70, this O-ring ensures a strong seal under pressure. Its design meets industry standards, ensuring reliability and performance in critical applications. This O-ring is an essential component for effective sealing in hydraulic and pneumatic systems.