SEAL (P/N 74305) - New Surplus
P/N: 74305
Category: Seals
This product requires a custom quote. Please contact our sales team for pricing information or submit an RFQ (Request for Quote).
Available Inventory
| Condition | Stock |
|---|---|
| New Surplus | 3 Available |
Product Description
The 74305 is an elastomeric crankshaft oil seal for Lycoming direct-drive engines. This seal creates a barrier at the crankshaft bore to contain engine oil and prevent leakage into external areas. Installed on Lycoming crankshaft assemblies during engine maintenance or overhaul.
PMA-equivalent part SL-74305 is also available. Installation follows Lycoming Service Instruction 1324D and the applicable engine maintenance manual. Verify part applicability in your engine's Illustrated Parts Catalog before installation to ensure correct fit and function.
Please note: Product descriptions are provided for informational purposes. Always refer to your aircraft's Illustrated Parts Catalog (IPC) to verify part compatibility and specifications.
Frequently Asked Questions
What is the SEAL (P/N 74305)?
The 74305 is an elastomeric crankshaft oil seal for Lycoming direct-drive engines. This seal creates a barrier at the crankshaft bore to contain engine oil and prevent leakage into external areas.
What material is the 74305 made from?
Aircraft seals and O-rings are manufactured from various elastomers including nitrile (Buna-N), fluorocarbon (Viton), silicone, and PTFE depending on the application. The SEAL meets aviation specifications for its intended use. Contact us for specific material data.
Can I order the 74305 in bulk quantities?
Yes, we stock seals and gaskets in quantity and offer bulk pricing. Submit a Request for Quote (RFQ) for volume orders, or call (904) 998-9101 for immediate quantity availability on the 74305.
What is the shelf life of the 74305?
Elastomeric seals have manufacturer-specified shelf lives that vary by material and storage conditions. We follow industry standards for cure date tracking and proper climate-controlled storage. Contact us for shelf life details on the 74305.