The Dichtomatik OR 4.987" O-ring is a premium sealing solution made from 90 NBR (Nitrile Butadiene Rubber), ideal for various industrial applications. With a cross-section of 0.103", it offers excellent resistance to oils and fuels, ensuring a secure seal. This O-ring meets rigorous industry standards, making it suitable for hydraulic and pneumatic systems. Its precise dimensions ensure compatibility with standard fittings, making it a reliable choice for automotive, aerospace, and manufacturing applications. Choose this O-ring for dependable sealing performance.