Goodrich Wheel & Brake Backup O-Ring S12587-219 OEM Replacement

The Goodrich Wheel & Brake S12587-219 is a backup O-ring intended for use with main brake assemblies on aircraft landing gear systems. Backup rings are installed alongside primary O-rings to prevent extrusion of the primary seal under high hydraulic pressure conditions within the brake actuator.

This backup O-ring is manufactured to original equipment specifications as part of the S12587 Goodrich Wheel & Brake proprietary seal series. It is intended for installation during brake assembly overhaul, seal replacement, or piston seal kit installation on main wheel brake assemblies. Supplied in new condition.

Intended for main brake assembly sealing applications per manufacturer distribution records (Goodrich Aerospace Backup O-Ring, For Main Brakes). Verify suitability and material compatibility against the applicable brake assembly overhaul manual prior to installation.