Kaxite Sealing manufactures PTFE hose in four series: KS-PTFE-HP high pressure (ID 1/4"–2", up to 1500 PSI / 103 bar, double layer 304 SS braid), KS-PTFE-MP medium pressure (ID 1/4"–4", up to 500 PSI / 34 bar, single layer 304 SS braid), KS-PTFE-VAC vacuum (ID 1/2"–6", full vacuum to 150 PSI / 10 bar, stainless steel helix) and KS-PTFE-FD food grade (ID 3/8"–1.5", up to 250 PSI / 17 bar, FDA white cover). Service temperature -73 to +260 °C continuous, chemically inert across pH 0–14, non-stick bore with no leaching or plasticizer carry-over. FDA CFR 21, USP Class VI and EU 10/2011 compliant. End connections: JIC, NPT, flanged, push-on serrated stem and crimped. Custom lengths, special fittings and unique diameters to drawing. Free samples, bulk wholesale and 7–15 day lead times.
Each series is engineered for a distinct combination of pressure, vacuum and flexibility requirements. Use this guide to shortlist the right model before requesting a quotation.
Double layer 304 stainless steel braid over seamless virgin PTFE core. Highest pressure rating in the range — the standard for hydraulic and high-pressure chemical injection.
ID 1/4" – 2" · Up to 1500 PSI / 103 bar · Coils up to 50 ft
Single layer 304 stainless steel braid over seamless PTFE core. Balanced pressure and flexibility — the workhorse for general chemical transfer and process lines.
ID 1/4" – 4" · Up to 500 PSI / 34 bar · Coils up to 100 ft
Stainless steel helix wound over PTFE core. Resists collapse under full vacuum with tight bend radius — the standard for suction, vent and low-pressure transfer lines.
ID 1/2" – 6" · Full vacuum to 150 PSI / 10 bar · Custom lengths
Single layer SS braid with FDA-compliant white exterior cover over virgin PTFE core. Meets USP Class VI, FDA CFR 21 and EU 10/2011 — ideal for food, dairy, beverage and pharmaceutical service.
ID 3/8" – 1.5" · Up to 250 PSI / 17 bar · 25 ft, 50 ft
Smooth bore, convoluted and stainless steel helix constructions from virgin PTFE with 304 SS reinforcement. Chemically inert, self-lubricating and non-stick — the standard choice for aggressive chemical transfer, high-purity fluid handling and steam sterilization service.
| Series | Inner Diameter | Working Pressure | Reinforcement | Service Temperature | Standard Lengths |
|---|---|---|---|---|---|
| KS-PTFE-HP | 1/4" – 2" | Up to 1500 PSI / 103 bar | Double Layer 304 SS Braid | -73 to +232 °C | Coils up to 50 ft |
| KS-PTFE-MP | 1/4" – 4" | Up to 500 PSI / 34 bar | Single Layer 304 SS Braid | -73 to +232 °C | Coils up to 100 ft |
| KS-PTFE-VAC | 1/2" – 6" | Full vacuum to 150 PSI / 10 bar | Stainless Steel Helix | -73 to +204 °C | Custom lengths |
| KS-PTFE-FD | 3/8" – 1.5" | Up to 250 PSI / 17 bar | Single Layer SS Braid + FDA White Cover | -73 to +204 °C | 25 ft, 50 ft |
| Custom | To drawing | To specification | Special fittings / diameters | To specification | To drawing |
Six industries where smooth bore, convoluted or metal-lined PTFE hose replaces rubber, thermoplastic or metal hose assemblies.
Transfer of acids, alkalis, solvents, monomers and aggressive process fluids in loading / unloading, reactor feed lines and sampling systems. Pairs with our PTFE ring gaskets for flange connections.
API transfer, WFI, clean steam and solvent lines in cGMP compliance. USP Class VI compliant grades. See our pure PTFE gaskets for hygienic flanges.
Flavors, colors, oils, hot water and CIP fluids. FDA CFR 21 and EU 10/2011 compliant white cover, non-tainting and non-stick. Pairs with our PTFE tubes in sampling lines.
Ultra-pure chemical delivery for etching, cleaning and plating processes. High purity is non-negotiable. Pairs with our PTFE flexible tubing for full flow-path purity.
Supply lines for adhesives, paints, inks and lubricants in robotic dispensing and spraying systems. Flexible and low-maintenance. Pairs with our PTFE packing in combined assemblies.
Hot oil heat transfer systems, fuel lines for turbines and generators, and lube oil lines. Wide temperature stability from cryogenic to +260 °C. Pairs with our PTFE hoses range.
Standard rubber hoses are susceptible to chemical attack, have a limited temperature range (degrading above 250 °F) and their inner lining can crack or swell. PTFE hose with its inert PTFE core resists virtually all chemicals, operates from deep cryogenic to high heat, and has a non-stick ultra-smooth bore that minimizes flow resistance. Higher upfront cost but far lower total cost of ownership in harsh conditions.
Stainless steel wire braid (single or double) is used for high-pressure applications — double braid offers the highest pressure rating. A stainless steel helix (continuous spiral wire) is used primarily for full vacuum service or high-suction duty, as it resists collapse with greater flexibility and tighter bend radius than heavy braid, but at lower pressure ratings.
Yes. Our KS-PTFE-FD series is manufactured with FDA-compliant materials, has a clean white exterior cover and is produced under controlled conditions to meet USP Class VI, FDA CFR 21 and EU 10/2011 standards. Ideal for conveying ingredients, solvents and water for injection (WFI). Certificates of Compliance available on request.
Ensure the hose is not twisted during connection. Observe the minimum bend radius — bending tighter can kink or damage the reinforcement. Use proper clamps or fittings designed for PTFE hose and avoid over-tightening. Support the hose along its run to prevent sagging and stress on the ends. Keep away from sharp edges and abrasive surfaces.
Common methods include reusable push-on style fittings with serrated stems (JIC, NPT, flanged) secured with a clamp, and permanent crimped fittings using a special machine. We also supply factory-attached ends. Always use fittings with a stem designed specifically for PTFE / PFA hose to ensure a secure leak-proof seal.
PTFE hoses are remarkably low-maintenance. Primary inspection involves checking the outer cover for damage, kinks or braid corrosion, and checking fittings for tightness. For sanitary applications, CIP and SIP protocols are compatible. The non-stick interior cleans easily with flushing. Track service hours in extreme conditions to plan proactive replacement.
Send us your inner diameter, working pressure, vacuum requirement, temperature range, reinforcement type (SS braid or helix), end fitting configuration, length and operating media — 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.
