These Bagged O-Rings are made from NBR (Nitrile Butadiene Rubber) with a 70 durometer rating, ensuring excellent resistance to oils, fuels, and other chemicals. Each pack contains 10 O-Rings, making them perfect for various sealing applications in automotive, industrial, and plumbing systems. The O-Rings are precision-engineered to meet industry standards, providing a reliable seal that prevents leaks and enhances performance. Their durability and flexibility make them suitable for both static and dynamic applications, ensuring long-lasting use in demanding environments.