3017452 - Pratt & Whitney OEM PT6A/PW100 Igniter Plug Gasket

3017452 – Pratt & Whitney PT6A / PW100 Igniter Plug Gasket

Available now on the Airparts.aero Marketplace.

The Pratt & Whitney Canada (P&WC) 3017452 is a genuine OEM, flight-critical crush gasket specifically engineered for the installation of igniter plugs in P&WC turbine engines, including the ubiquitous PT6A and PW100 series. This is not a simple washer; it is a precision-manufactured seal designed to perform two indispensable functions in one of the harshest environments in an aircraft. First, it creates a positive, gas-tight seal to contain the extremely high pressures and temperatures of the combustion chamber. Second, it provides a critical thermal path to conduct heat away from the igniter plug into the engine case.

This gasket is manufactured from a soft, high-temperature, annealed nickel-based alloy. It is designed to be a single-use "crush" seal, meaning it permanently deforms upon torquing to perfectly fill the microscopic imperfections between the igniter plug and the engine's igniter boss. The integrity of this seal is absolutely paramount to preventing catastrophic hot gas leaks and ensuring the proper thermal operation of the ignition system.

Key Features

• Genuine Pratt & Whitney Canada OEM Part: The only component guaranteed to meet the exact material, dimensional, and ductility specifications required for a safe seal in a turbine engine combustor.

• Single-Use Crush Gasket Design: Engineered to plastically deform upon installation, creating a perfect metal-to-metal seal that cannot be achieved by re-using the part.

• High-Temperature Nickel Alloy Construction: Fabricated from a specialized, annealed nickel alloy that offers exceptional resistance to the extreme high temperatures and corrosive environment of the turbine gas path.

• Seals High-Pressure Combustion Gases: Designed to contain the very high pressures of the engine's combustion chamber, preventing dangerous hot gas leaks.

• Provides Critical Heat Transfer Path: Forms a conductive bridge between the igniter plug body and the engine case, essential for managing the igniter's operating temperature.

Technical Specifications

• Part Number: 3017452

• Component Type: Igniter Plug Gasket / Crush Seal

• OEM Manufacturer: Pratt & Whitney Canada (P&WC)

• Material: High-Temperature, Annealed Nickel-Based Alloy.

• Application: For standard Pratt & Whitney Canada turbine engine igniter plugs.

Engine Compatibility

The 3017452 is a standard consumable part used across a vast range of Pratt & Whitney Canada turboprop and turbofan engines. Common applicable engine families include:

• PT6A Series (all variants)

• PW100 Series (e.g., PW120, PW121, PW127)

• PW150 Series

• Other P&WC engine models as specified.

Crucial Note: The specific engine model must be checked against the latest revision of the official P&WC Illustrated Parts Catalogue (IPC) to ensure correct part number applicability.

Applications

• Mandatory for the installation of any igniter plug into the engine's combustor case.

• Required replacement every time an igniter plug is removed for inspection, cleaning, or replacement.

Why Choose 3017452?

Choosing a genuine Pratt & Whitney Canada 3017452 is a non-negotiable matter of flight safety. The failure of an igniter plug seal will result in a high-pressure, high-temperature hot gas leak. This leak can rapidly erode the engine case, damage the expensive igniter lead and connector, and create a significant in-flight fire hazard. Re-using an old, work-hardened gasket or using a non-certified part of unknown material composition is a guarantee of a future leak. The genuine P&WC part is the only way to ensure the correct material properties and ductility required to achieve a safe, reliable seal in this zero-failure-tolerance application.

The function of the 3017452 is rooted in the metallurgy of metallic crush seals. The gasket is fabricated from a highly ductile, annealed (fully softened) nickel alloy. Nickel is the material of choice due to its excellent resistance to oxidation and corrosion at the extreme temperatures present at the combustor case, which can often exceed 1000°F (540°C). When the specified installation torque is applied to the igniter plug, the immense compressive force exceeds the annealed nickel's low yield strength, causing the metal to plastically deform. This cold-working process forces the soft metal to flow and conform to the micro-topography of the two harder steel sealing surfaces of the igniter plug and the engine's igniter boss. The same process also work-hardens the gasket material, significantly increasing its hardness and yield strength, and preventing any further deformation. This is precisely why a re-used gasket, now in a work-hardened state, is physically incapable of plastically deforming a second time to create a new seal; it will act as a hardened washer, leaving microscopic leak paths for high-pressure, high-temperature gas to escape.

Note: This is a flight-critical, single-use component. This gasket MUST be replaced with a new one every time an igniter plug is installed. Re-using this gasket will cause a catastrophic hot gas leak. The sealing surfaces on both the engine and the igniter plug must be perfectly clean and free of any old gasket material or carbon deposits. Installation must be performed by a certified, properly-rated turbine engine technician in strict accordance with the Pratt & Whitney Canada engine maintenance manual.

Documentation

The definitive part number applicability and all installation and torque procedures are detailed in the applicable Pratt & Whitney Canada Illustrated Parts Catalogue (IPC) and Engine Maintenance Manuals for the specific engine model.