Expanded PTFE Round Cord
Model:KXT C104
Expanded PTFE Round Cord Valve-spindle cord made of pure expanded PTFE, used as valve-spindle and flange seals in the chemical, pharmaceutical and food processing industries. Flanges are sealed quickly and securely by simple insertion of a ring of PTFE round cord (Ends twisted)
KXT C104 Expanded PTFE Round Cord is a 100% pure expanded PTFE (ePTFE) sealing cord engineered for valve spindles, flanges, and shaft seals in demanding chemical, pharmaceutical, and food processing applications. Featuring FDA-compliant material, exceptional chemical resistance (pH 0–14), and a wide temperature range from -150°C to +260°C. High residual thickness and excellent recovery properties ensure long-term sealing reliability. Available in various diameters, simply cut and twist ends for quick installation. Request a quote →
KXT C104 Expanded PTFE Round Cord – Versatile Sealing Cord for Demanding Applications
The KXT C104 Expanded PTFE Round Cord is a premium sealing solution manufactured from 100% pure expanded PTFE (ePTFE) without fillers. This valve-spindle cord is designed for use as valve spindle seals, flange seals, and shaft seals in the chemical, pharmaceutical, and food processing industries. Its unique expanded structure provides exceptional adaptability to shafts and flange surfaces, combined with very low sliding friction and superior recovery properties.
Flanges are sealed quickly and securely by simple insertion of a ring of PTFE round cord with twisted ends. The cord is a very clean material, harmless in contact with food, and fully compliant with FDA standards. Whether you need a reliable valve stem packing or a quick flange seal, the KXT C104 delivers unmatched performance in the most demanding environments. Contact our technical team for diameter selection and custom length requirements.
Key Features of KXT C104 Expanded PTFE Round Cord
- ✅ 100% Pure Expanded PTFE – No fillers, ensuring maximum chemical purity and performance.
- ✅ FDA Compliant – Safe for food contact and pharmaceutical applications.
- ✅ Wide Temperature Range – Serviceable from -150°C to +260°C, suitable for extreme environments.
- ✅ Exceptional Chemical Resistance – pH 0–14, resistant to virtually all chemicals and solvents.
- ✅ High Recovery Properties – Maintains sealing pressure over time with excellent recovery after compression.
- ✅ Low Sliding Friction – Ideal for valve spindle and rotating shaft applications.
- ✅ Non-Toxic & Biologically Inert – Safe for sensitive environments including food and pharmaceuticals.
- ✅ Quick & Easy Installation – Cut to length, twist ends, and insert – no special tools required.
Technical Specifications – KXT C104 Expanded PTFE Round Cord
| Parameter | Value |
|---|---|
| Model | KXT C104 |
| Material | 100% Expanded PTFE (ePTFE) |
| Temperature Range | -150°C to +260°C |
| Max. Pressure | 100 bar |
| Max. Shaft Speed | 10 m/s |
| pH Range | 0 – 14 |
| Density | 0.70 – 0.80 g/cm³ |
| FDA Compliance | Yes |
| Applications | Valve spindles, flange seals, shaft seals, equipment sealing |
* Custom diameters and lengths available upon request. Contact our technical team for specific requirements.
Advantages of Expanded PTFE Round Cord
Universal Valve Packing – One versatile cord suitable for a wide range of valve and sealing applications.
High Mechanical Properties – Excellent tensile strength and durability for demanding service conditions.
Superior Chemical Resistance – pH 0–14, resistant to acids, alkalis, solvents, and aggressive chemicals.
Reduced Cold Flow – Expanded structure minimises creep and maintains sealing integrity over time.
Non-Toxic & Biologically Inert – Safe for food, pharmaceutical, and medical applications.
Non-Flammable – Inherently fire-resistant, enhancing safety in critical environments.
Easy Installation – Simply cut, twist ends, and insert – minimises downtime and labour costs.
Excellent Adaptability – Conforms to irregular surfaces and shaft imperfections for a reliable seal.
Typical Applications
Valve Spindles Stem sealing for control valves, gate valves, globe valves, and ball valves.
Flange Seals Quick and secure flange sealing by inserting a ring of PTFE cord with twisted ends.
Shaft Seals Rotating and reciprocating shaft sealing in pumps, mixers, and agitators.
Chemical Processing Sealing of vessels, reactors, tanks, and pipe connections in aggressive chemical environments.
Pharmaceutical & Food Processing FDA‑compliant sealing for sanitary equipment, food contact, and sterile environments.
Apparatus Engineering Machine housings, equipment covers, and general industrial sealing.
Why Choose Kaxite for Expanded PTFE Round Cord?
Premium Material Quality – 100% pure expanded PTFE sourced from approved suppliers with full traceability.
FDA Compliance – All cord materials meet FDA 21 CFR 177.1550 standards for food and pharmaceutical contact.
Custom Sizes – Available in a wide range of diameters and custom lengths to suit your application.
ISO 9001:2015 Certified – Rigorous quality control ensures consistent product quality.
Competitive Pricing – Factory‑direct supply with no intermediary costs.
Fast Delivery – Standard sizes in stock; custom orders produced within 5‑10 days.
Proven Reliability: Kaxite's expanded PTFE round cord is trusted by engineers in chemical, pharmaceutical, and food processing plants worldwide for its consistent quality and outstanding sealing performance.
Quality Assurance & Compliance
All KXT C104 expanded PTFE round cord is manufactured under strict quality controls in our ISO 9001:2015 certified facility. Each batch is tested for density, tensile strength, and dimensional accuracy. FDA 21 CFR 177.1550 compliance is standard, and material test certificates (MTCs) are available upon request. Our PTFE cord is non‑toxic, biologically inert, and safe for food contact applications.
- ISO 9001:2015
- FDA 21 CFR 177.1550
- 100% Dimensional Inspection
- Density & Tensile Testing
- Full Material Traceability
Custom Manufacturing – Any Diameter, Any Length
We specialise in custom‑manufactured expanded PTFE round cord to meet your exact specifications. Send us your requirements for a rapid quotation.
- Custom diameters from 2mm to 20mm
- Custom lengths – any length available
- FDA‑compliant material standard
- Custom packaging and labelling
- Just‑in‑time delivery programs
- Technical support for installation and application
Request a free sample or get a bulk quote – our team responds within 24 hours with competitive pricing and lead‑time estimates.
Frequently Asked Questions About Expanded PTFE Round Cord
- Q: What is expanded PTFE round cord used for?
- A: It is primarily used as valve spindle packing, flange seals, and shaft seals in chemical, pharmaceutical, and food processing industries. It can also be used for sealing tanks, machine housings, and general equipment covers.
- Q: Is expanded PTFE round cord FDA approved?
- A: Yes – our KXT C104 is manufactured from materials compliant with FDA 21 CFR 177.1550, making it safe for food contact and pharmaceutical applications.
- Q: What is the maximum temperature for expanded PTFE round cord?
- A: The KXT C104 can handle temperatures from -150°C to +260°C, making it suitable for both cryogenic and high‑temperature applications.
- Q: How do I install expanded PTFE round cord?
- A: Simply cut the cord to the required length, twist the ends together to form a ring, and insert it into the gland or flange. The expanded PTFE conforms to the sealing surface, creating a reliable seal without special tools.
- Q: Is the cord reusable?
- A: While the cord can be removed and re‑installed in some cases, we recommend using fresh cord for critical applications to ensure maximum sealing reliability.
Partner with Kaxite Sealing – your trusted manufacturer of expanded PTFE round cord. With FDA compliance, exceptional chemical resistance, and a wide temperature range, our sealing cord delivers reliable performance in the most demanding applications. Request a free sample or get a bulk quote today – our engineering team responds within 24 hours.
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No. 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang China
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