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Goodrich Wheel & Brake PTFE Backup Ring 68-1389 OEM Replacement

Goodrich Wheel & Brake PTFE Backup Ring 68-1389 OEM Replacement

Goodrich Wheel and Brake

(Backordered) Normally Available within 3–7 Days.

SKU:68-1389

Regular price $51.08 USD
Regular price $63.85 USD Sale price $51.08 USD
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The 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 the elevated hydraulic pressures developed during brake actuation. Without proper backup ring support, O-rings can extrude into the annular gap between the piston and cylinder bore, causing seal damage, erratic brake response, and potential fluid loss. The PTFE material of the 68-1389 provides low friction against the bore surface, resists the hydraulic fluids used in aircraft brake systems, and maintains dimensional stability across the temperature extremes of aircraft brake service. The 68-1389 measures 7.25 x 5.00 x 0.07 inches and weighs 0.01 lb, indicating a large-diameter flat backup ring. HTS code is 8807200010.

Specification Value
Part Number 68-1389
Manufacturer Goodrich Wheel & Brake
Part Type PTFE Backup Ring
Material PTFE (Polytetrafluoroethylene)
Dimensions (L x W x H) 7.25 x 5.00 x 0.07 in
Weight 0.01 lb
Country of Origin United States
Condition New
ECCN 9A991.d
Schedule B 8807200010
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