SEAL-THRESHOLD AIR STAIR DOOR (P/N 50-430182-5) - New Surplus

The 50-430182-5 is an elastomeric threshold seal for Beechcraft King Air air stair doors. Installed at the door sill, this seal closes the entry gap to maintain cabin pressurization and prevent water ingress during flight and ground operations. The durable rubber profile compresses when the door closes, creating a weathertight barrier between the fuselage and external environment.

Replace during scheduled maintenance when compression set or cracking occurs. Installation follows aircraft maintenance manual specifications and requires verification against your Illustrated Parts Catalog for proper fit and compatibility.

What is the SEAL-THRESHOLD AIR STAIR DOOR (P/N 50-430182-5)?

The 50-430182-5 is an elastomeric threshold seal for Beechcraft King Air air stair doors. Installed at the door sill, this seal closes the entry gap to maintain cabin pressurization and prevent water ingress during flight and ground operations.

What material is the 50-430182-5 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-THRESHOLD AIR STAIR DOOR meets aviation specifications for its intended use. Contact us for specific material data.

Can I order the 50-430182-5 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 50-430182-5.

What is the shelf life of the 50-430182-5?

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 50-430182-5.