The 6.35 MM ID X 1.78 MM CS DUPONT KALREZ 6221 O-Ring from Freudenberg-NOK is a high-quality sealing component. With an inner diameter of 6.35 mm and a cross-section of 1.78 mm, this O-ring is perfect for applications requiring reliable seals. Made from Dupont Kalrez 6221, it offers excellent resistance to chemicals and high temperatures, making it suitable for various industrial environments. This O-ring adheres to industry standards, ensuring dependable performance. Its precise sizing and robust material make it a versatile choice for critical sealing applications.