The 19.8 MM ID X 3.6 MM CS DUPONT KALREZ 4079 O-Ring by Freudenberg-NOK is engineered for high-performance sealing. With a 19.8 mm inner diameter and a 3.6 mm cross-section, this O-ring is ideal for demanding applications. Constructed from Dupont Kalrez 4079, it provides superior chemical resistance and thermal stability, making it suitable for extreme conditions. This O-ring meets stringent industry standards, ensuring reliability in critical applications. Its precise dimensions guarantee a secure fit, enhancing the effectiveness of your sealing solutions.