Kaxite Sealing manufactures PTFE hoses in three engineered constructions — smooth bore (virgin PTFE liner plus single or double SS 304 / 316L braid), convoluted (corrugated core for tight routing) and PTFE-lined flexible metal hose (seamless PTFE tube inside corrugated SS body). Inner diameter 6–100 mm, service temperature -73 to +260 °C, pressure rating up to 3000 PSI with full-vacuum capability. Chemically inert across pH 0–14 and compatible with CIP / SIP sterilization up to 150 °C at 3–4 bar. FDA and USP Class VI grades available. End fittings: NPT, BSP, flange, Tri-Clamp, DIN and JIS. Free samples, bulk wholesale and 7–15 day lead times.
Each construction is engineered for a distinct combination of pressure, flexibility and routing geometry. Use this guide to shortlist the right hose type before requesting a quotation.
Virgin PTFE liner plus single or double stainless steel braid (304 or 316L). Seamless extruded core for optimal flow and cleanliness, with PVC, PUR or SS braid outer cover options.
General chemical transfer · Pneumatic lines · Up to 3000 PSI · Full vacuum
Fully corrugated PTFE core with stainless steel wire or braid reinforcement. Extremely tight bend radius, absorbs thermal expansion and vibration without kinking.
Suction lines · Vent lines · Tight routing · Up to 250 PSI
Seamless PTFE tube inserted into a corrugated stainless steel hose body (304 / 316L). Combines chemical resistance with crush resistance for the most demanding duties.
Loading arms · Tanker connections · Critical process lines
Smooth bore, convoluted and metal-lined constructions from virgin PTFE with stainless steel reinforcement. Chemically inert, self-lubricating and non-stick — the standard choice for aggressive chemical transfer, high-purity fluid handling and steam sterilization service.
| Construction | Liner | Reinforcement | Pressure Rating | Bend Radius | Typical Service |
|---|---|---|---|---|---|
| Smooth Bore | Virgin PTFE, seamless | Single / Double SS 304 or 316L braid | Up to 3000 PSI | Medium | Chemical transfer, pneumatic |
| Convoluted | Corrugated PTFE | SS wire or braid | Up to 250 PSI | Very tight | Suction, vent, thermal movement |
| Metal Lined | Seamless PTFE tube | Corrugated SS 304 / 316L body | Custom to design | Tight | Loading arms, tanker connections |
| Braid Options | — | Single or double layer | Double for high surge | — | High-vibration duty |
| Temperature | All grades | — | — | — | -73 to +260 °C continuous |
| Vacuum | Smooth bore | SS braid | Full vacuum | — | Suction and vacuum service |
Six industries where smooth bore, convoluted or metal-lined PTFE hoses replace rubber, thermoplastic or metal hose assemblies.
Transfer of aggressive acids, alkalis, solvents and monomers. Resistant to virtually all industrial chemistry. Pairs with our PTFE ring gaskets for flange connections.
WFI lines, API transfer and sterile process duty. USP Class VI compliant grades with CIP / SIP compatibility up to 150 °C. See our pure PTFE gaskets for hygienic flanges.
Flavorants, additives, CIP fluids and high-purity ingredient transfer. FDA 21 CFR 177.1550 compliant and non-tainting, with quick-dry non-stick surface.
Etchants, high-purity gases and ultrapure water distribution where ultra-low extractables matter. Pairs with our PTFE tubes for full flow-path purity.
Transfer lines for GC, HPLC, ICP-MS and sample handling. Inert, non-leaching and flexible enough for tight instrument routing. Pairs with our PTFE flexible tubing.
Fuel and chemical handling, pneumatic control and hydraulic circuits. Convoluted and metal-lined types absorb vibration and thermal movement in moving equipment.
Smooth bore offers minimal flow resistance and higher pressure ratings (up to 3000 PSI) with a larger minimum bend radius. Convoluted is significantly more flexible with a very tight bend radius for complex routing or moving equipment, but rated for lower pressures (up to 250 PSI) — ideal for suction, vent and low-pressure lines.
Yes. Our hoses are fully compatible with Steam-in-Place procedures and withstand repeated saturated steam exposure up to 150 °C at 3–4 bar. The non-stick bore dries quickly and completely, preventing microbial growth — critical for pharmaceutical and food-grade sterilization cycles.
Fitting choice depends on operating pressure, media, equipment connection type (NPT, BSP, flange, sanitary ferrule) and whether the assembly is subject to vibration. We supply stainless steel threaded fittings, flanges, Tri-Clamp sanitary fittings and DIN / JIS connections — crimped, field-attachable or permanently bonded to suit the application.
PTFE is resistant to virtually all industrial chemicals — strong acids, bases, halogens and organic solvents. Only in extremely rare conditions do certain alkali metals (molten sodium) and fluorine compounds at elevated temperature and pressure react with PTFE. For 99.9% of industrial applications, PTFE is considered universally inert.
The PTFE liner alone has little mechanical strength — the stainless steel braid provides tensile strength and contains operating pressure. Single braid suits medium-pressure duty. Double braid is used for higher pressure ratings, greater safety factor and improved resistance to impulse pressure surges. For high-vibration applications, double braid is recommended.
Store in a cool, dry place away from direct sunlight and ozone sources. Do not compress or tightly coil for extended periods — let hoses rest in their natural curve. Never bend tighter than the specified minimum bend radius during installation and support the hose along its run to prevent sagging and stress on end fittings.
Send us your construction type (smooth bore, convoluted or metal-lined), inner diameter, length, braid option (single or double), end fittings, operating media, temperature and pressure — or a finished-part drawing. Our export team replies within 24 hours and confirms specification, lead time, packaging and documentation before you place a bulk order.
