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FGFB238004422 – Dassault Falcon OEM Fuel Panel Preformed Seal
Available now on the Airparts.aero Marketplace.
Overview
The Dassault Falcon FGFB238004422 is a flight-critical, OEM preformed fuel panel seal, an essential component for maintaining the integrity of the integral fuel tanks on various Falcon business jets. This is not a generic gasket or simple O-ring; it is a precision-molded, channel-style seal engineered to fit perfectly in the groove of a fuel tank access panel. The primary function of the FGFB238004422 is to create a positive, leak-proof barrier, preventing the loss of jet fuel from the "wet wing" and protecting the tank from contamination by water and debris.
Manufactured from a specialized, fuel-resistant elastomer to Dassault's exacting specifications, this seal is designed to withstand constant immersion in Jet A fuel while maintaining its elasticity and sealing force. Its integrity is fundamental to the safety and airworthiness of the aircraft.
Key Features
Positive Fuel Tank Sealing: Its sole purpose is to create a robust, static seal between the fuel tank access panel and the wing structure. It is designed to prevent any weeping or leaking of fuel, which is a critical fire safety requirement.
Fuel-Resistant Elastomer: Molded from a high-specification synthetic rubber compound (typically an advanced Nitrile or Fluorocarbon formulation). This material is specifically engineered to resist swelling, hardening, and degradation from long-term exposure to aromatic hydrocarbon jet fuels.
Preformed Channel Design: Unlike a simple O-ring, this is a "preformed" seal with a specific cross-sectional shape (often a "U" or "channel" profile). This design is engineered to provide a controlled "squeeze" and a large sealing footprint when the access panel is torqued down, ensuring a reliable, long-lasting seal.
Environmental Barrier: Prevents the ingress of water, de-icing fluid, and other contaminants into the fuel tank. Water contamination is a primary cause of microbial growth and corrosion within fuel tanks.
Genuine Dassault Falcon OEM Part: As a genuine factory component, it guarantees the correct material composition, durometer (hardness), and precise dimensions required for a perfect, leak-proof fit in the panel groove of a Falcon jet.
Technical Specifications
Part Number: FGFB238004422
Component Type: Preformed Fuel Tank Access Panel Seal
Material: High-Specification, Fuel-Resistant Synthetic Rubber (Elastomer)
Primary Function: Provides a static, leak-proof seal for fuel tank access panels.
Installation: Fits into a machined groove on the access panel or wing structure.
Certification: EASA / FAA Production Approval
Aircraft Compatibility
The FGFB238004422 is a critical sealing component on some of the world's most capable and renowned long-range business jets. It is imperative to consult the specific aircraft's Illustrated Parts Catalog (IPC) for final verification.
Common Aircraft Platforms:
Dassault Falcon 900 series
Dassault Falcon 2000 series
Dassault Falcon 7X / 8X
Applications
The FGFB238004422 is a mandatory replacement item for fuel system maintenance:
Fuel Tank Maintenance: This seal must be replaced every time a fuel tank access panel is removed for any reason, such as for a fuel quantity probe replacement, internal tank inspection, or structural repair.
Resolving Fuel Leaks: The primary component to replace when troubleshooting or repairing a fuel leak originating from a wing access panel.
Why Choose FGFB238004422?
A fuel leak from a wing access panel is a critical airworthiness issue that will ground an aircraft immediately. The Dassault Falcon FGFB238004422 is the only seal certified by the manufacturer to maintain the integrity of the integral fuel tank. Using a genuine OEM part is the only way to ensure the seal has the correct, fuel-impermeable material properties and the precise profile to function as a reliable seal. The risk of using a non-certified seal with unknown material composition is a catastrophic fuel leak and potential in-flight fire.
The Dassault Falcon FGFB238004422 is designed for a static face seal application in an integral fuel tank, commonly known as a "wet wing." In this design, the sealed-off interior of the wing box structure is the fuel tank. The FGFB238004422 is not just preventing leaks; it is a primary boundary of this pressure vessel. The preformed channel shape is critical. When the access panel is installed and the screws are torqued, the channel cross-section is compressed by a precise amount. This compression forces the lips of the seal to exert a powerful, uniform pressure against the two mating surfaces (the panel and the wing skin). This design provides a much larger sealing "footprint" and a more reliable barrier against the hydrostatic pressure of the jet fuel than a simple O-ring, ensuring the integrity of the wet wing design.
Note: This is a single-use, flight-critical fuel system component. It must be replaced whenever the access panel it seals is removed. Installation must be performed by a certified AME or A&P mechanic with experience in Falcon jet fuel systems, in strict accordance with the current Dassault Aviation maintenance manual. All sealing surfaces must be meticulously clean, and proper sealant application is often required in conjunction with the seal.
