The 3.1 MM CS X 57.4 MM ID NBR (BUNA) 70 O-Ring from Freudenberg-NOK is a high-quality sealing solution designed for various industrial applications. With a cross-section of 3.1 mm and an inner diameter of 57.4 mm, this O-ring is made from durable NBR (BUNA) material, rated at 70 durometer hardness. It provides excellent resistance to oils, fuels, and chemicals, making it suitable for hydraulic and pneumatic systems. This O-ring ensures a secure seal, minimizing the risk of leaks and enhancing the performance of your equipment.