Description
The 153-00300 is a genuine Textron Aviation ring grease seal used to keep a joint or pass-through tight. It fits the Baron Series B55, E55, 58 or G58, Skyhawk, and Skylane. It carries an export classification of ECCN 9A991, weighs 0.03 pounds, and measures 2.4 (L) x 2.4 (W) x 0.05 (H) Inches.
Because the 153-00300 is an original-equipment (OEM) part sourced directly from Textron Aviation, it matches the exact specification and placement called out in the aircraft's type design and maintenance data — assurance a generic substitute cannot offer.
Across the Beechcraft Baron, Cessna Skyhawk, and Cessna Skylane fleet, correctly identified factory parts like this keep every airframe consistent and configuration-correct.
Sealing components are sized and compounded for the fluids, temperatures, and pressures they contain, so the exact specified part maintains a tight joint. Using the factory part number preserves configuration control, so the airframe stays consistent with its approved type design and the work is straightforward to sign off at inspection.
Genuine sourcing means the part matches the drawing exactly, so fit and function are known quantities rather than a gamble at installation.
Both the Cessna and Beechcraft lines are supported today by Textron Aviation, formed in 2014 to unite the two historic Wichita manufacturers with Hawker. The Beechcraft Baron, introduced in 1961 as a twin-engine development of the Bonanza, carried Beechcraft's reputation for solid handling into a capable light twin.
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