Goodrich Wheel & Brake PTFE Backup Ring 68-1389 OEM Replacement Helicopter Accessory 0 — For renters who

0 — For renters who may face one brand of GPS one day and another the next

Fair chemical resistance

Ideal for young wildlife enthusiasts

allowing slight expansion

3/8" and 1/2" tubing

Goodrich Wheel & Brake PTFE Backup Ring 68-1389 OEM Replacement Helicopter Accessory 0 — For renters whoThe Goodrich Wheel & Brake 68 1389 is a PTFE backup ring intended for aircraft brake assembly hydraulic sealing applications. Manufactured in the United States under CAGE code 97153, this backup ring is an OEM replacement component that is 8130 3 eligible for use in FAA regulated maintenance programs. ECCN classification is 9A991. d. PTFE backup rings are used in aircraft brake hydraulic systems to support O ring seals and prevent seal extrusion under