The Freudenberg-NOK Dichtomatik OR 4.475" is a premium O-ring made from 90 NBR (Nitrile Butadiene Rubber), perfect for a variety of sealing applications. With a diameter of 4.475 inches and a cross-section of 0.210 inches, this O-ring is engineered to withstand high pressures and temperatures. The NBR material provides excellent resistance to oils and chemicals, ensuring durability in harsh environments. This O-ring adheres to industry standards, making it a reliable choice for critical applications requiring effective sealing solutions.