M83248/1-116 – Textron Aviation OEM Preformed Packing O-Ring for Beech 1900 Airliner
Available now on the Airparts.aero Marketplace.
Overview
The M83248/1-116 is a military-standard, high-performance O-ring, specified by Textron Aviation as a genuine OEM component for the Beechcraft 1900 Airliner. This is not a standard O-ring; it is a flight-critical seal manufactured in strict accordance with MIL-DTL-83248, Type 1, Class 1. It is fabricated from a high-modulus, 90-durometer Fluorocarbon (FKM) elastomer, commonly known as Viton®, designed to provide a reliable, long-lasting seal in the most demanding, high-pressure aerospace systems. Its robust material properties make it the essential choice for sealing hydraulic fluids, synthetic oils, and fuels at the elevated temperatures found in a transport-category turboprop aircraft.
Key Features
- High-Pressure, High-Durometer Design: Features a 90-durometer (Shore A) hardness. This high hardness provides exceptional resistance to extrusion, making this O-ring ideal for sealing high-pressure hydraulic and fuel system connections, often without the need for a separate backup ring.
- Superior Temperature & Fluid Resistance: The Fluorocarbon (FKM) material provides an exceptional operating temperature range (up to 400°F) and is highly resistant to chemical degradation from synthetic turbine oils (MIL-PRF-23699), hydraulic fluids, and jet fuels.
- Mil-Spec Certified Performance: As a certified military specification part, it guarantees the material compound, dimensional tolerances, and physical properties meet the highest standards of safety and reliability required for use in transport-category aircraft like the Beech 1900.
- Distinctive Material Identification: Mandated by the specification to be brown in color, providing immediate visual verification that the correct high-temperature, high-pressure FKM O-ring is being installed.
- Genuine Textron OEM Part: As the OEM-specified part, it guarantees a perfect fit and full conformance with the stringent quality and traceability requirements for the Beechcraft 1900's primary systems.
Technical Specifications
- Standard: MIL-DTL-83248 Type 1, Class 1
- Full Part Number: M83248/1-116
- Material: Fluorocarbon Rubber (FKM / Viton®)
- Durometer (Hardness): 90 Shore A
- Color: Brown
- AS568 Dash Size: -116
- Nominal Dimensions:
- Inside Diameter (I.D.): 0.734 inches
- Cross Section (C.S.): 0.103 inches
- Operating Temperature Range: Approximately -15°F to 400°F (-26°C to 204°C)
Aircraft Compatibility
While used in many demanding aerospace applications, the M83248/1-116 is specified by Textron Aviation for use in their rugged and reliable 19-passenger regional airliner.
- Primary Aircraft Model:
- Beechcraft 1900 / 1900C / 1900D Airliner
- Common Systems:
- High-Pressure Hydraulic Systems: Landing gear, flaps, and primary flight control actuators.
- Engine & Firewall Forward: Sealing connections for fuel, oil, and bleed air systems in the high-temperature environment of the PT6A engine nacelles.
- Fuel System: High-pressure fuel line fittings and fuel control unit connections.
Applications
The M83248/1-116 is the specified sealing solution for the most critical static joints:
- High-Pressure Static Sealing: Its primary application is creating a robust, leak-proof seal between two stationary components in a joint subjected to high fluid pressure.
- Preventing Extrusion: The hard, 90-durometer material resists being forced into the clearance gap between mating parts, a common failure mode for softer O-rings under high pressure.
- Component Overhaul: A mandatory replacement item during the overhaul of any high-pressure hydraulic, fuel, or oil system component on the Beechcraft 1900.
Why Choose M83248/1-116?
In a transport-category aircraft, the failure of a single seal in a primary hydraulic or fuel system can have catastrophic consequences. The M83248/1-116 is an engineered solution, not just a rubber ring. Its specific material and high hardness are designed to handle the pressures and temperatures of airliner-grade systems. Using a genuine, certified Mil-Spec part is the only way to ensure the O-ring has the correct, tested material properties to perform reliably flight after flight. For the Beechcraft 1900, this is the specified standard for safety and airworthiness.
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- Meta Title: M83248/1-116 High-Pressure O-Ring for Beech 1900 | FKM 90 Duro | Airparts.aero
- Meta Description: Purchase the genuine Textron OEM M83248/1-116 O-ring. A flight-critical, 90-durometer Fluorocarbon (FKM) seal for the high-pressure hydraulic and fuel systems on the Beechcraft 1900 Airliner.
- SEO and Plain Text Keywords: M83248/1-116, Beechcraft 1900 parts, Textron Aviation parts, FKM o-ring, Viton o-ring, high pressure o-ring, mil-spec o-ring, fluorocarbon seal, 90 durometer o-ring, brown o-ring, hydraulic seal, Airparts.aero.
Order Your M83248/1-116 O-Rings Now
Ensure the integrity and safety of your aircraft's high-pressure fluid systems with certified, military-specification seals. Visit Airparts.aero to order your M83248/1-116 O-rings today.
SEO-Enhanced Addendum
The high 90-durometer hardness of the M83248/1-116 O-ring is a critical engineering feature for high-pressure applications. Hardness in an elastomer correlates directly to its resistance to deformation under load and its extrusion resistance. In a high-pressure hydraulic system (which can operate at 3000 PSI or more), a softer 70 or 75-durometer O-ring could be physically forced like a liquid into the tiny gap (extrusion gap) between the piston and cylinder wall, causing it to be nibbled away and eventually fail. The M83248/1's 90-durometer FKM material provides a tough, rubber-like solid that holds its shape under immense pressure, maintaining the seal's integrity and preventing catastrophic fluid loss.
Note: This is a flight-critical sealing component. Always verify the correct O-ring part number from the applicable component maintenance manual (CMM) or aircraft Illustrated Parts Catalog (IPC). Ensure the O-ring is within its specified shelf life before installation. Lubricate with a clean, compatible system fluid to prevent damage during assembly. The brown color is a critical material identifier.
