The Freudenberg-NOK OR 2.859" 90 NBR N903X seal is engineered for optimal sealing performance in demanding environments. Constructed from high-quality Nitrile Butadiene Rubber (NBR), this O-ring has a cross-section of 0.139" and is designed to withstand various pressures and temperatures. Its precise dimensions make it compatible with a range of industrial applications, ensuring effective sealing against liquids and gases. This product adheres to industry standards, making it a reliable choice for hydraulic and pneumatic systems. Perfect for professionals looking for durable sealing solutions.