Drive Flange Cap O-Ring on Billet Hub

The drive flange cap O-ring on billet hub by Diversified Machine is a precision elastomer seal engineered for high-performance drivetrain applications. This component is essential for any mechanic or vehicle builder working with custom axle assemblies, differential housings, or transmission flanges where fluid containment and pressure integrity are critical. Whether you're rebuilding a race-prepared drivetrain, servicing a modified rear end, or maintaining original equipment, this OEM-specification O-ring prevents fluid weeping and maintains proper sealing under load.

Manufactured from premium black rubber, this drive flange cap O-ring features a 1.5-inch inner diameter and 1.625-inch outer diameter with a 0.0625-inch cross-section thickness. The billet hub design ensures concentricity and consistent compression, critical for maintaining uniform sealing force across the flange face. Rubber composition resists conventional automotive fluids—engine oil, transmission fluid, and differential lubricants—while maintaining elasticity across standard operating temperatures. The precision dimensions mean zero guesswork during installation; proper groove fit eliminates the risk of extrusion or rolling under pressure cycles.

This O-ring is ideal for technicians rebuilding differentials, upgrading axle assemblies, or replacing worn seals in high-mileage vehicles. Installation is straightforward—the compact 0.007-pound component installs in seconds once the drive flange is accessible. Compatibility spans most domestic and import differentials using standard 1.5-inch billet hubs; verify your specific application's groove dimensions before ordering. Stock a replacement for routine maintenance intervals or have one on hand for emergency seal repairs to avoid downtime.