These high-quality nitrile rubber O-rings are specifically designed for CEN RC vehicles, providing essential sealing for various components such as shocks, differentials, and fuel systems. Their precise 0.9mm inner diameter and 2.2mm cross-section ensure a tight, leak-proof seal, crucial for maintaining optimal performance and preventing contamination in demanding RC environments. The durable nitrile material offers excellent resistance to oils, fuels, and extreme temperatures, making them a reliable replacement or upgrade for maintaining the integrity of your RC drivetrain and suspension.