PTFE Sheet Manufacturer in China

Polymer, is a remarkable high-performance material renowned for its exceptional chemical resistance, wide temperature tolerance, and outstanding non-stick properties. Often referred to by the brand name Teflon®, PTFE is widely used across countless industries where durability and reliability under extreme conditions are paramount. At Kaxite Seals, we specialize in manufacturing premium-grade PTFE sheets that meet the most demanding specifications for sealing, insulating, lining, and structural applications. Our commitment to precision engineering and quality control ensures that every Kaxite PTFE sheet delivers consistent, superior performance. Our PTFE sheets are engineered from 100% virgin PTFE polymer, processed to achieve optimal physical and mechanical properties. They are available in various grades and forms to suit specific application needs. **Key Grades and Properties:** * **Virgin PTFE Sheets:** Made from pure, uncontaminated PTFE resin, offering the highest level of chemical resistance and electrical insulation. * **Glass-Filled PTFE Sheets:** Infused with glass fibers to enhance compressive strength, reduce creep (cold flow), and improve wear resistance, ideal for heavy-load bearing applications. * **Carbon-Filled PTFE Sheets:** Containing carbon or graphite fillers to provide superior wear resistance, lower friction, and enhanced thermal conductivity. * **Stainless Steel-Filled PTFE Sheets:** Incorporate stainless steel particles for extreme wear resistance and excellent load-bearing capabilities, often used in harsh abrasive environments. * **Bronze-Filled PTFE Sheets:** Filled with bronze powder to offer excellent thermal conductivity, high compressive strength, and outstanding wear resistance. ### Detailed Product Specifications & Parameters Our Kaxite Seals PTFE sheets are characterized by a comprehensive set of technical parameters. The following table provides a detailed overview of the standard properties for our virgin PTFE sheet, which serves as the baseline for our filled compounds. **Table 1: Standard Physical & Mechanical Properties of Kaxite Virgin PTFE Sheet** | Property | Test Method | Unit | Value / Range | | :--- | :--- | :--- | :--- | | **Density** | ASTM D792 | g/cm³ | 2.14 - 2.20 | | **Tensile Strength** | ASTM D638 | MPa (psi) | 20 - 35 (2900 - 5000) | | **Elongation at Break** | ASTM D638 | % | 250 - 350 | | **Compressive Strength** | ASTM D695 | MPa (psi) | 12 - 20 (1700 - 2900) | | **Hardness, Shore D** | ASTM D2240 | - | 50 - 65 | | **Coefficient of Friction (Dynamic)** | ASTM D1894 | - | 0.05 - 0.10 | | **Continuous Service Temperature** | - | °C (°F) | -200 to +260 (-328 to +500) | | **Short-Term Peak Temperature** | - | °C (°F) | Up to +300 (572) | | **Thermal Conductivity** | ASTM C177 | W/m·K | 0.25 | | **Dielectric Strength** | ASTM D149 | kV/mm | 20 - 40 | | **Volume Resistivity** | ASTM D257 | Ohm·cm | >10¹⁸ | **Available Dimensions and Tolerances:** We offer Kaxite PTFE sheets in a versatile range of sizes and thicknesses to accommodate diverse project requirements. **Table 2: Standard Available Sizes & Tolerances** | Parameter | Standard Available Range | Typical Tolerance | | :--- | :--- | :--- | | **Sheet Thickness** | 0.5mm to 100mm (0.02" to 4") | ±10% or ±0.1mm (whichever is greater) | | **Sheet Width** | Up to 1500mm (59") | ±5mm | | **Sheet Length** | Up to 3000mm (118") | ±5mm | | **Standard Sheet Size** | 1000mm x 1000mm, 1500mm x 1500mm, 1000mm x 2000mm, etc. | Custom sizes available | ### Chemical Resistance and Application Suitability One of the most critical advantages of PTFE is its near-universal chemical inertness. Kaxite PTFE sheets are resistant to almost all industrial chemicals, solvents, and acids, including strong oxidizers like sulfuric and nitric acid. They are completely unaffected by moisture and will not dissolve or swell in any known solvent below 300°C. This makes them perfect for: * **Gaskets & Seals:** For aggressive chemical processing, pharmaceutical, and petrochemical industries. * **Liners:** For tanks, vessels, chutes, and trays to prevent corrosion and sticking. * **Insulators:** In electrical and electronic applications due to superb dielectric properties. * **Bearings & Wear Pads:** Where low friction and no lubrication are required. * **Food & Beverage Processing:** As a safe, FDA-compliant, non-stick surface. ### Frequently Asked Questions (FAQs) About PTFE Sheets **What is the main difference between PTFE and Teflon®?** Teflon® is a registered brand name for PTFE (polytetrafluoroethylene) owned by Chemours (formerly DuPont). Essentially, all Teflon® is PTFE, but not all PTFE is branded as Teflon®. Kaxite Seals manufactures high-quality PTFE sheets that exhibit the same exceptional properties as the branded material. **Can Kaxite PTFE sheets be machined or fabricated easily?** Yes, PTFE is relatively soft and can be easily machined using standard metalworking or woodworking tools, though specialized tool geometries are recommended for optimal results. It can be cleanly cut, drilled, turned, milled, and skived to create complex seals, gaskets, insulators, and components. **What are the limitations of PTFE sheets?** While outstanding in many areas, PTFE has two primary limitations: creep (cold flow) under sustained heavy loads and relatively low wear resistance in its pure form. This is why Kaxite Seals offers filled compounds (glass, carbon, bronze). Pure PTFE is also not recommended for applications involving high-velocity wear or significant abrasion without reinforcement. **How do I choose between virgin PTFE and a filled grade?** The choice depends entirely on the application's priorities. For maximum chemical purity, electrical insulation, or FDA compliance, choose virgin PTFE. If your application involves high loads, requires minimal deformation over time (low creep), or needs enhanced wear resistance, select a filled grade like our glass-filled or carbon-filled PTFE sheets from Kaxite. **What temperature range can Kaxite PTFE sheets withstand?** Kaxite PTFE sheets maintain their properties across an incredibly wide temperature spectrum. They can be used continuously from cryogenic temperatures as low as -200°C (-328°F) up to +260°C (+500°F) without losing integrity. Short-term exposure to peaks of 300°C (572°F) is possible. **Are PTFE sheets safe for food contact?** Yes, virgin PTFE is FDA-compliant and is considered safe for food contact applications. It is inert, non-toxic, and does not leach chemicals. Kaxite Seals can provide material certifications and statements of compliance for food-grade applications upon request. **How should PTFE sheets be stored and handled?** Store sheets in a cool, dry place away from direct sunlight and heat sources. They should be kept flat to prevent warping or bending. While chemically resistant, they should be kept clean from dust and debris before fabrication. No special handling precautions are needed beyond standard workshop safety. **Can PTFE be bonded or welded to itself or other materials?** Bonding PTFE is notoriously difficult due to its non-stick nature. It cannot be bonded with conventional adhesives. Specialized processes like sodium etching (napping), plasma treatment, or the use of high-temperature PTFE adhesives are required for creating solid bonds. Mechanical fastening is often a more practical solution. **What is the lead time for custom-sized Kaxite PTFE sheets?** For standard sizes and grades, Kaxite Seals typically maintains stock for quick dispatch. For custom-cut sizes, large volumes, or special filled compounds, lead times vary depending on the order specifics. Our sales team provides accurate timelines based on current production schedules. **Does Kaxite Seals provide material test reports or certificates?** Absolutely. Kaxite Seals is committed to quality and traceability. We provide batch-specific Material Test Reports (MTRs) or Certificates of Conformance (CoC) with our shipments, detailing key physical properties and confirming the material meets specified standards.