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Ningbo Kaxite Sealing Materials Co., Ltd.
Ningbo Kaxite Sealing Materials Co., Ltd.
FDA · RoHS · REACH

China Expanded PTFE Manufacturer – ePTFE Sheets, Tape, Gaskets & Joint Sealant for Chemical & High-Purity Sealing

Kaxite Sealing is a leading expanded PTFE manufacturer and ePTFE sheet supplier in China, offering expanded PTFE sheets, joint sealant tape, valve stem packing, spiral wound filler, gaskets, porous membranes, and PTFE yarn for chemical, semiconductor, pharmaceutical, and food processing industries. 15+ years of expertise, exporting to 60+ countries.

⬤ MOQ: 10 sheets ⬤ Lead Time: 7‑15 days ⬤ FOB Ningbo / EXW / CIF ⬤ Custom Sizes & Grades ⬤ Free Sample
15+
Years Expertise
60+
Countries Served
260°C
Max Service Temp
ISO 9001
Certified Quality
FDA
Compliant Grades
RoHS
Environment Safe
100%
Traceability

ePTFE Sealing Solutions by Industry

Engineered expanded PTFE for demanding environments – chemical, thermal, and high‑purity applications.

🧪

Chemical Processing

ePTFE sheets and gaskets for aggressive acids, solvents, and high‑temperature reactors.

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🔬

Semiconductor

High‑purity ePTFE membranes and sealants for wafer processing, cleanrooms, and ultra‑pure water.

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💊

Pharmaceutical & Food

FDA‑compliant ePTFE gaskets and tape for sanitary processing, bioreactors, and food contact.

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🛢️

Oil & Gas

ePTFE joint sealant and valve stem packing for refineries, pipelines, and offshore platforms.

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🚢

Marine & Offshore

Corrosion‑resistant ePTFE tapes and gaskets with CCS approval for shipbuilding and ballast systems.

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🔧

Custom OEM / ODM

Custom thickness, density, dimensions, and die‑cut shapes – to your exact specification.

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Why Choose Kaxite for ePTFE?

  • ✅ In‑house expanded PTFE production line
  • ✅ ISO 9001:2015 certified quality system
  • ✅ FDA, RoHS, REACH compliant materials
  • ✅ 15+ years of PTFE manufacturing expertise
  • ✅ Full traceability – MTC per EN 10204 3.1
  • ✅ Custom thickness, density, and dimensions
  • ✅ Competitive factory‑direct pricing
  • ✅ 24/7 technical support & global shipping
ISO 9001 FDA RoHS

ePTFE Material Capabilities

  • 🔹 Forms: Sheets, tape, gaskets, joint sealant, packing, membrane, yarn
  • 🔹 Temp Range: -200°C to +260°C
  • 🔹 Density: 0.6 – 1.2 g/cm³ (custom)
  • 🔹 Thickness: 0.2 – 15 mm
  • 🔹 Width: Up to 1500 mm
  • 🔹 Grades: Standard, high‑purity, low‑outgassing, FDA
Full Custom OEM/ODM Rapid Proto

Frequently Asked Questions

Quick answers about expanded PTFE products.

Q: What is ePTFE and how is it different from standard PTFE?
A: ePTFE (expanded PTFE) is a microporous, biaxially‑oriented form of PTFE with enhanced flexibility, conformability, and sealing performance compared to standard virgin PTFE.
Q: What forms of ePTFE do you offer?
A: Sheets, tapes, gaskets, joint sealant, valve stem packing, porous membranes, and PTFE yarn for braided packing.
Q: Can you customize thickness, density, and dimensions?
A: Yes, we offer custom thickness from 0.2mm to 15mm, density from 0.6 to 1.2 g/cm³, and any sheet or tape size.
Q: Is ePTFE FDA compliant for food and pharmaceutical use?
A: Yes, select grades meet FDA 21 CFR 177.1550 and USP Class VI requirements for food contact and pharmaceutical processing.
Q: What is your typical lead time?
A: Standard ePTFE sheets and tapes ship in 7‑15 working days. Custom orders may require 15‑20 days. Express service available.
Q: Do you provide material test reports and certificates?
A: Absolutely. Every batch includes an MTC (EN 10204 3.1). Third‑party inspections (SGS, BV) are also supported.

Need High‑Quality ePTFE Products at Factory Prices?

Tell us your material type, size, and quantity – our engineering team will respond within 24 hours with a tailored quote and technical support.

Get Your Quote Now →
🏭 In‑House Production ✅ FDA & RoHS 📦 MOQ: 10 sheets 🚢 Global Shipping

About Us

  • Ningbo Kaxite Sealing Materials Co., Ltd.

    Ningbo Kaxite Sealing Materials Co., Ltd specializing in the production and research expanded PTFE products and isotropic expansion development, mainly expanded PTFE sheet, expanded PTFE joint sealant, expanded PTFE Valve Stem Packing, expanded PTFE Spiral Wound Gasket Filler material, ePTFE membrane and fabrics, ePTFE yarn for braided packing lines with various braided packing, various eptfe seals and gaskets.

    Our products use superior quality raw materials and advanced production technology, which have reliable quality, complete specifications, can meet the different requirements of customers in different industries applications.

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News

  • 05-14
    2024
    Blog
    What is an expanded PTFE sheet?
    The expanded PTFE sheet is made from 100 percent virgin PTFE and is exceptionally compressible. It is a food-safe product with great chemical resistance, making it a preferred sealing material in the food, beverage, and pharmaceutical sectors.
    View More
    What is an expanded PTFE sheet?
  • 05-14
    2024
    Blog
    What is the difference between PTFE and expanded PTFE?
    Polytetrafluoroethylene (PTFE) is one of the most common materials used for seals. Expanded PTFE, or ePTFE, is a soft material with many of the same properties as PTFE. However, ePTFE is more flexible, making it a better choice for specific applications.
    View More
    What is the difference between PTFE and expanded PTFE?
  • 05-14
    2024
    Blog
    What is the difference between virgin and expanded PTFE?
    Both PTFE and Expanded PTFE have good chemical resistance. Additionally, Expanded PTFE has better creep resistance and cold flow. Some of the key characteristics of PTFE are as follows: It can perform well in environments with temperatures as high as 260 Degree Celsius.
    View More
    What is the difference between virgin and expanded PTFE?
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