Structure: Structure of PTFE lined flexible metal hose: Inside: PTFE hose(smooth PTFE or convoluted) Middle: stainless steel corrugate pipe Outside: Stainless steel wire braid Connection: All kinds of fittings Feature: 1. Corrosion resistance. PTFE can completely resist industrial chemicals, and the corrosion rate is zero, and there is no pollution. 2. Cleanable and non-sticky. Low-porosity tubes will not trap bacteria, and can be easily cleaned with steam, detergent, caustic alkali or solvent. 3. Hygiene. Materials approved by FDA meet or exceed 3A requirements. 4. Compatible. It will not contaminate any media, nor will it bring any taste, color or smell to them. 5. Durable. It is designed for use in harsh environments with severe chemical, thermal and mechanical stress. Even after extreme thermal cycles, it will not age or become brittle. 6. Double containment. The metal shell is the auxiliary containment. Application: PTFE lined flexible metal hose is widely used in chemical, petroleum, textile, pharmaceutical, metallurgy, machinery, electronics, electricity, food and aviation.