The Freudenberg-NOK OR 0.850 is a durable O-ring constructed from 70 durometer NBR (Nitrile Butadiene Rubber), perfect for applications requiring effective sealing against oils and fuels. With a diameter of 0.210", this O-ring is engineered for high performance in various industrial settings. The N703W model adheres to industry standards for quality and reliability, ensuring a secure seal. Its precise dimensions and robust material composition make it an ideal choice for preventing leaks and ensuring system efficiency.