PTFE Hose Assembly consistS of a PTFE inner tube, steel wire reinforcement, and metal connectors (coupling sizes, sleeves, and nuts), with customized lengths, coupling angles, and threads, and can be fitted with fireproof or abrasion-resistant sheaths as required. They are suitable for aerospace hydraulic, fuel and lubrication systems and aerospace pneumatic systems that allow a small amount of gas leakage through the PTFE inner tube.