68-1482 - Textron Aviation OEM O-Ring Rubber for Fixed Engine

68-1482 – Textron Aviation OEM O-Ring Rubber for Fixed Engine

Available now on the Airparts.aero Marketplace.

Overview

The Textron Aviation 68-1482 is a genuine OEM O-ring, a flight-critical seal engineered specifically for the propeller governor drive adapter on a wide range of Beechcraft aircraft. This is not a standard hardware-store O-ring; it is a precision-molded seal fabricated from a specialized, high-temperature elastomer designed to create a positive, leak-proof barrier at the interface between the governor drive and the engine's accessory case. As a genuine Textron OEM part, it guarantees the precise dimensions and material properties required to withstand the heat, pressure, and chemical exposure of this demanding firewall-forward application.

Key Features

• High-Temperature Elastomer Construction: Manufactured from a high-grade, durable rubber compound (typically a high-temperature Nitrile or Fluorocarbon elastomer). This material is specifically formulated to resist degradation, hardening, and swelling when exposed to hot engine oil and the high temperatures of the engine compartment.
• Positive High-Pressure Seal: Designed to prevent pressurized engine oil from leaking out of the propeller governor drive pad. This is critical for maintaining engine oil levels, ensuring proper governor operation, and preventing oil from coating the engine and creating a fire hazard.
• Precision Molded Dimensions: Fabricated to extremely tight tolerances for cross-sectional diameter and inside diameter. This precision ensures a perfect fit within the machined groove of the governor adapter, providing the correct amount of "squeeze" for a reliable seal.
• Vibration Resistance: The elastomeric material is resilient and absorbs the micro-vibrations of the engine, allowing it to maintain a consistent seal without fatiguing or failing.
• Genuine Textron OEM Part: As a genuine factory component specified for Beechcraft aircraft, it guarantees the correct material composition and durometer (hardness) required for a safe, airworthy, and long-lasting installation.

Technical Specifications

• Part Number: 68-1482
• Component Type: Propeller Governor Drive Adapter O-Ring Seal
• Material: High-Temperature, Oil-Resistant Synthetic Rubber (Elastomer)
• Primary Application: Sealing the propeller governor drive adapter to the engine accessory case.
• Certification: FAA Production Approval

Aircraft Compatibility

The 68-1482 O-ring is a critical sealing component on a vast and prestigious fleet of Beechcraft piston and turboprop aircraft. It is imperative to consult the specific aircraft's Illustrated Parts Catalog (IPC) for final verification.

• Common Aircraft Models:
  • Beechcraft Bonanza: 35, A36, G36
  • Beechcraft Baron: 55, 58
  • Beechcraft King Air: 90, 100 Series

Applications

The 68-1482 is an essential component for engine and propeller system maintenance:

• Propeller Governor Installation: A mandatory replacement part any time a propeller governor or its drive adapter is removed for service or replacement.
• Engine Overhaul: A key seal that is always replaced during an engine overhaul or when the accessory case is serviced.
• Oil Leak Repair: The primary component responsible for sealing this interface; it is the first part to be replaced when troubleshooting an oil leak from the base of the prop governor.

Why Choose 68-1482?

An oil leak from the propeller governor drive can lead to significant oil loss, a messy engine compartment that poses a fire risk, and potential contamination of other components. The 68-1482 O-ring is an inexpensive but absolutely vital component that prevents this. Using a genuine Textron Aviation OEM part ensures that the seal is made from the correct elastomer, capable of withstanding the specific operating temperatures and pressures of the engine. For a flight-critical seal, there is no substitute for the certified quality and peace of mind that comes with using a genuine OEM part.

Order Your 68-1482 O-Rings Now

Ensure a leak-free, airworthy installation with a genuine Textron Aviation OEM seal. Visit Airparts.aero to order your 68-1482 propeller governor drive O-rings today.

The propeller governor drive adapter is a critical interface where the engine's internal, pressurized oil gallery is accessed to power the propeller governor. The governor, in turn, uses this high-pressure oil to control propeller pitch. The 68-1482 O-ring creates the static seal that contains this oil pressure. The selection of the correct elastomeric compound is critical. It must not only resist hot oil but also maintain its "compression set resistance"—its ability to return to its original shape after being compressed. A material with poor compression set resistance will flatten over time, losing its sealing force and leading to leaks. The genuine 68-1482 is made from a compound specifically chosen for its high performance in this key characteristic.

Notes

NHA 3-1601-2 AND 3-1607

Note: This is a flight-critical sealing component. Installation must be performed by a certified A&P mechanic. The O-ring is a single-use item and must be replaced whenever the component it seals is removed. Ensure all sealing surfaces are clean, dry, and free of nicks or scratches before installation. Lubricate the O-ring with clean engine oil before assembly to prevent damage.