1 inch armored Teflon hose
As a high-performance industrial hose, armored Teflon tube has shown excellent performance under many harsh working conditions. This article was written by Litong Industrial Pipe Division on May 10, 2025. It will comprehensively introduce the characteristics, structure, application fields and precautions of this special hose, and provide professional reference for engineering technicians and purchasing decision makers.
Overview and main advantages of armored Teflon tube
Armored Teflon hose is a special hose with polytetrafluoroethylene (PTFE) as the inner lining and metal braided layer as the outer layer. It combines the excellent chemical stability of Teflon material and the mechanical strength of metal armor. This unique structural design makes it a high-end solution in the field of industrial fluid transmission.
The main advantages include:
Excellent chemical stability: PTFE lining can resist corrosion from almost all strong acids, strong alkalis and organic solvents
Extremely wide temperature adaptability: continuous working temperature range of 70°C to +260°C, up to 300°C for a short time
Excellent anti-aging performance: not affected by UV and ozone, stable performance in long-term use
Extremely low friction coefficient: smooth and non-stick surface, preventing medium deposition and scaling
Good mechanical strength: metal braided layer provides excellent pressure resistance and mechanical damage resistance
Safety and hygiene: FDA-compliant, can be used in food and pharmaceutical industries
Long service life: service life can reach 58 times that of ordinary rubber tubes under suitable working conditions
Analysis of structure and material composition
The armored Teflon tube adopts a multi-layer composite structure design, and each layer of material is carefully selected and processed:
1. Lining layer: pure PTFE or modified PTFE material, usually 0.52mm thick, provides chemical inertness and non-stick properties
2. Transition layer: special adhesive ensures a firm bond between PTFE and the metal layer
3. Reinforcement layer: 304 or 316 stainless steel wire braid (13 layers) to provide mechanical strength and pressure resistance
4. Outer protective layer: optional, PU or additional stainless steel braided layer to provide additional protection
Material variants:
Food grade: using high-purity PTFE and 316L stainless steel, in line with FDA 21 CFR 177.1550 standard
Conductive type: adding carbon-filled PTFE or special metal mesh for anti-static occasions
Highly transparent type: using a special process to make the PTFE layer translucent, easy to observe the fluid state
Typical application scenarios and working conditions
Armored Teflon tubes are widely used in the following fields:
1. Chemical industry:
Strongly corrosive chemical delivery (acid, alkali, solvent)
High-temperature reaction medium delivery
High-purity chemical pipeline system
2. Semiconductor manufacturing:
Ultrapure water and high-purity chemical distribution system
CMP process slurry delivery
Etching and cleaning process
3. Food and pharmaceutical:
CIP/SIP system
Fluid transmission with high hygiene requirements
High-temperature sterilization pipeline
4. Automotive industry:
Fuel system test pipeline
Brake oil and transmission oil testing
Engine high temperature medium transmission
5. Laboratory equipment:
Analytical instrument connection pipeline
High-precision fluid control system
Corrosive reagent delivery
Technical parameters and size range
Armored Teflon tubes provide a wide range of size options to meet different application requirements:
Pressure-temperature relationship:
At 20°C, the maximum working pressure can reach the nominal value
For every 50°C increase in temperature, it is recommended that the working pressure be reduced by 1015%
At 220°C, it is recommended that the working pressure not exceed 50% of the nominal value
Precautions for use and maintenance recommendations
To ensure the best performance and service life of armored Teflon tubes, pay attention to the following:
1. Installation requirements:
Avoid sharp bends with small radius and maintain the minimum bending radius
Use special joints to avoid deformation of the PTFE layer caused by over-tightening
Reserve appropriate thermal expansion margin during installation
2. Operation restrictions:
It is strictly forbidden to exceed the maximum operating temperature and pressure
Avoid sudden pressure shock and mechanical shock
Special structural models need to be selected for vacuum applications
3. Maintenance:
Check the outer braided layer for damage regularly
Use neutral detergent when cleaning and avoid strong oxidants
Drain the medium in the pipe when it is not used for a long time
4. Safety warning:
Protect yourself from burns when operating at high temperature
Ensure good grounding when conveying flammable media
Confirm that the system has been depressurized and cooled when replacing
Selection Guide and Alternatives
Selection considerations:
1. Medium characteristics (chemical compatibility, temperature, particulate content)
2. Working pressure and pulse pressure requirements
3. Environmental conditions (outdoor UV exposure, mechanical wear risk)
4. Hygiene grade requirements
5. Electrical characteristics requirements (conductivity/insulation)
Comparison of alternatives:
Ordinary rubber tube: low cost but not resistant to chemical corrosion and high temperature
Pure PTFE tube: excellent chemical properties but limited pressure resistance
PFA tube: similar to PTFE but can be melt processed, higher cost
Metal hose: high pressure resistance but limited chemical compatibility
Armored Teflon tube has become an irreplaceable choice in many demanding applications due to its unique performance combination. Correct selection and use can significantly improve system reliability and reduce total cost of ownership.
Leave a Message