Lycoming 72091 Oil Seal Ring is a replacement sealing component designed for use in compatible Lycoming aircraft piston engines. The seal ring provides a controlled sealing interface between engine components, helping prevent oil leakage and maintain proper lubrication system performance during engine operation.

The oil seal ring plays an important role in retaining engine oil within the designated lubrication areas while preventing unwanted migration of oil into adjacent engine sections. Proper sealing contributes to efficient engine operation, reduced oil consumption, and protection of internal engine components from lubrication-related issues.

Manufactured to Lycoming specifications, the 72091 oil seal ring is designed to withstand exposure to aviation engine oil, elevated temperatures, vibration, and continuous operating cycles. Precision dimensions ensure correct fitment and reliable sealing performance throughout the engine service period.

The seal ring should be inspected during engine maintenance, component removal, or overhaul procedures. Replacement is recommended whenever wear, hardening, deformation, or deterioration is observed to help maintain proper engine sealing integrity and continued airworthiness.

Key Features

- Part Number: 72091
- Manufacturer: Lycoming Engines
- Component: Oil Seal Ring
- Provides reliable engine oil sealing between mating components
- Helps prevent oil leakage and maintain lubrication system integrity
- Designed for resistance to engine oil, heat, and vibration
- Precision-manufactured for accurate fit and dependable performance
- Suitable for compatible Lycoming aircraft engines