The Lycoming Seal Washer (P/N 2529294-1) serves as a critical sealing component within the complex architecture of Lycoming IO-720 series aircraft engines. This small but essential part is designed to provide a secure, leak-free interface between mating surfaces, often in conjunction with fasteners or fittings, thereby preventing the escape of fluids such as oil or fuel and maintaining system pressure integrity. Its precise dimensions and material composition are engineered to withstand the operational stresses and temperatures inherent to high-performance piston aircraft engines, contributing directly to the engine's overall reliability and longevity.
Specifications
- Part Number: 2529294-1
- Weight: Approximately 0.01 lb (4.5 grams)
- Dimensions:
- Length: 0.65 inches (16.51 mm)
- Width:
- Stock: Out of Stock - On Backorder
- Manufacturer Part #: 2529294-1
- Part#: 2529294-1
Aircraft Fitment Finder
Returns & refund summary
- 30-day return window — with prior return authorization, unopened in original packaging.
- Restocking fee: 20% on unopened items, 30% on open-box items.
- Refund processing fee: 5.51% applies to all refunds (returns, cancellations, core-fee refunds) regardless of reason.
- Return shipping: paid by buyer.
- Non-returnable categories: installed/used parts, special-order or rebuilt items, programmed items (incl. ELTs), batteries, AOG-priority orders, international orders.
Full terms: Return Policy.
Authenticity & authorization
All parts sold by American Aviation Parts are genuine factory products sourced through authorized distribution channels. Our authorization status varies by brand — for some brands we are a direct authorized dealer; for others we are an independent reseller through authorized distribution. Either way, the part you receive is the same factory product, with standard documentation available on request.
See our full Manufacturer Authorizations page for the current per-brand status.
Need traceability paperwork?
If your installation requires FAA Form 8130-3, manufacturer Certificate of Conformance, or other traceability documentation, please call 1-877-722-8727 or email [email protected] before placing the order so we can confirm what is available for this part.
Shipping
Standard ground, expedited, and AOG shipping options are available at checkout. Full shipping-cost tiers and timelines are published on our Delivery Information page.
