LINER (P/N 9573) - New Surplus

Part 9573 is a PTFE hose liner that creates a smooth internal bore within aircraft hydraulic hoses. The liner acts as a barrier protecting reinforcement layers while reducing fluid permeation through hose walls. Installed inside hose assemblies per SAE AS1339 aerospace standards, it maintains system integrity and compatibility with hydraulic fluids across temperature and pressure cycles.

Installation and testing must follow applicable aircraft maintenance data or FAA AC 43.13-1B guidance before return to service.

What is the LINER (P/N 9573)?

Part 9573 is a PTFE hose liner that creates a smooth internal bore within aircraft hydraulic hoses. The liner acts as a barrier protecting reinforcement layers while reducing fluid permeation through hose walls.

What hydraulic fluid type is the 9573 compatible with?

Hydraulic component compatibility depends on the aircraft system design. Common aviation hydraulic fluids include MIL-PRF-5606 (mineral-based), MIL-PRF-83282 (synthetic), and Skydrol (phosphate ester). Verify the LINER against your aircraft maintenance manual for fluid compatibility.

Does the 9573 come pressure-tested and certified?

Overhauled and repaired hydraulic components are pressure-tested per manufacturer specifications and include 8130-3 documentation. The LINER is available in: New Surplus. Contact us for test documentation on your selected condition.

What is the turnaround time for hydraulic component orders?

In-stock hydraulic components ship same business day before 3 PM EST. We provide 24/7 AOG support at (904) 998-9101 for urgent hydraulic system needs. RFQ submissions are typically quoted within 24 hours.