The Freudenberg-NOK O-Ring, with a diameter of 3.975" and a cross-section of 0.210", is crafted from 75 VMQ silicone, known for its excellent thermal stability and chemical resistance. This O-Ring is ideal for sealing applications in various industries, ensuring a reliable seal in both static and dynamic conditions. It meets stringent industry standards, making it suitable for automotive, industrial, and aerospace applications. The precise dimensions guarantee compatibility and enhance the overall performance of the sealing solution.