The IDC 247-N70R-BAG includes five high-quality NBR (Nitrile Butadiene Rubber) O-rings, each with a 70 durometer hardness. These O-rings are designed for a wide range of sealing applications, providing excellent resistance to oils, fuels, and other chemicals. With a standard size, they are compatible with various fittings and connectors, ensuring a reliable seal in both static and dynamic applications. The durable construction ensures longevity and performance, making them ideal for automotive, industrial, and household uses. This bagged set offers convenience and ensures you have the right seals on hand for your projects.