3022375 - Pratt and Whitney OEM Seal for P&WC Engines PL.865 SFT DIAX1.3805X.312

Pratt and Whitney OEM Seal for P&WC Engines PL.865 SFT DIAX1.3805X.312

Available now on the Airparts.aero Marketplace.

Overview

The Pratt & Whitney 3022375 is a genuine OEM, flight-critical carbon face seal, a high-performance sealing component engineered for the demanding environment of the PT6A series of turboprop engines. This is not a simple O-ring; it is a precision-lapped, multi-part seal assembly designed to create a positive, dynamic seal between a rotating shaft and a stationary housing within the engine. Its primary function is to prevent high-pressure oil from leaking out of bearing compartments while preventing pressurized air from leaking in. As a genuine Pratt & Whitney Canada (P&WC) part, it guarantees the material composition and microscopic tolerances required for reliable operation in a high-speed, high-temperature turbine engine.

Key Features

• Carbon Face Seal Technology: Utilizes a highly polished, self-lubricating carbon element held in tension against a hardened, lapped steel mating ring by a series of springs. This design creates a dynamic seal that can accommodate microscopic shaft movements and maintain its integrity at extremely high rotational speeds.
• Superior Temperature & Pressure Capability: Engineered to perform reliably at the extreme temperatures and high pressures found within the engine's bearing compartments and accessory gearbox.
• Exceptional Durability & Low Wear: The carbon-graphite material is chosen for its excellent wear characteristics and low coefficient of friction when in contact with the mating ring, ensuring a long service life and minimal particulate generation.
• Precision-Lapped Surfaces: The mating faces of the carbon seal and the steel ring are lapped to a mirror-like finish, measured in light bands. This extreme flatness is essential for creating a positive seal that can effectively contain thin, hot turbine oil.
• Genuine P&WC OEM Part: As a genuine factory component, it guarantees conformance to the stringent metallurgical, manufacturing, and quality control standards required by the engine's original Type Certificate.

Technical Specifications

• Part Number: 3022375
• Component Type: Carbon Face Seal Assembly
• Manufacturer: Pratt & Whitney Canada (P&WC)
• Primary Function: Dynamic sealing of rotating shafts in bearing compartments.
• Material: Carbon-Graphite Seal, Hardened Steel Mating Ring, High-Temperature Elastomers.
• Certification: FAA / TCCA Production Approval

Aircraft Compatibility

The 3022375 is a critical internal seal used in a wide range of the ubiquitous Pratt & Whitney Canada PT6A engines, which power a vast number of aircraft specified by Textron Aviation and other manufacturers.

• Primary Engine Models:
  • Pratt & Whitney Canada PT6A Series (numerous variants)
• Common Textron Aviation Platforms:
  • Beechcraft King Air: 90, 100, 200 Series
  • Cessna: 208 Caravan
  • And a vast range of other turboprop aircraft from manufacturers like Pilatus, Daher, and De Havilland Canada.

Applications

The 3022375 is a fundamental component for engine reliability:

• Engine Oil System Integrity: Essential for preventing both external oil leaks (which are a fire hazard) and internal oil leaks (which can lead to oil consumption and coking).
• Engine Overhaul: A mandatory replacement item during any hot section inspection or major engine overhaul to ensure the integrity of the engine's sealing systems.
• Troubleshooting Oil Leaks: A primary component to inspect when diagnosing oil leaks from the engine's accessory gearbox or bearing sections.

Why Choose 3022375?

The internal sealing of a turbine engine is a complex engineering challenge. The failure of a single carbon seal can lead to a significant oil leak, a potential in-flight engine shutdown, and an extremely costly repair. Using a genuine Pratt & Whitney 3022375 OEM seal is the only way to ensure the part has the correct material composition and the microscopic dimensional tolerances required to perform reliably at tens of thousands of RPM. For a component this critical to engine health and flight safety, there is no substitute for a genuine P&WC part.

Order Your 3022375 Seals Now

Ensure the integrity of your high-value turbine engine with genuine, factory-certified components. Visit Airparts.aero to inquire about new or serviceable Pratt & Whitney 3022375 carbon seals today.

The 3022375 carbon face seal operates as a dynamic seal based on precision mechanics. The non-rotating carbon element is sealed to its housing with a secondary O-ring and is pushed forward by spring force. The rotating part of the seal is the hardened steel mating ring, which is sealed to the engine shaft. The primary seal is formed at the infinitesimally small gap between the lapped faces of the stationary carbon ring and the rotating steel ring. A microscopic film of oil works its way into this gap, creating a hydrodynamic film that the carbon seal "rides" on. This oil film provides lubrication and cooling, while the extreme flatness of the two surfaces and the constant spring pressure prevent any significant flow of oil, thus creating a near-perfect dynamic seal.

Note: This is a flight-critical engine internal component. Installation must be performed by a certified A&P or AME mechanic at a qualified engine overhaul facility in strict accordance with the current Pratt & Whitney Canada maintenance and overhaul manuals. Extreme care must be taken to protect the lapped sealing faces from any scratches, nicks, or contamination during handling and installation.