Material: 100% Expanded PTFE
Density: 0.4 – 0.8 g/cm³
Tensile Strength: 2.0 – 5.0 MPa
Elongation at Break: 50% – 200%
Dielectric Strength: ≥ 20 kV/mm
Contraction Percentage: ≤ 4% (at 250°C, 30 min)
Water Absorption: < 0.01%
Working Temperature: -196°C to +260°C (short-term to +300°C)
Work Pressure: PN10 – PN40 (1.0 – 4.0 MPa), depending on thickness and conditions
Brand: Chunhuan
Origin: China
Expanded PTFE sheet is a premium sealing material made from 100% virgin polytetrafluoroethylene (PTFE) through a unique stretching process. This process creates a micro-fibrillated structure that combines PTFE’s unmatched chemical inertness with excellent softness, flexibility, and elasticity. It is an ideal choice for static sealing applications in harsh environments where temperature fluctuations, vibration, or flange surface irregularities may occur.
Excellent Chemical Resistance: Resistant to almost all strong acids, alkalis, oxidizers, and organic solvents, making it suitable for highly corrosive environments.
Exceptional Seal Reliability: Its expandability allows it to fill even microscopic flange irregularities, ensuring tight sealing and self-tightening under internal pressure.
Wide Temperature Range: Works steadily between -196°C and +260°C, with short-term resistance up to +300°C.
Superior Anti-Creep Performance: The fibrous structure significantly improves resistance to compression creep and cold flow compared to standard PTFE.
Non-Contaminating and Clean: 100% pure PTFE, free from binders or pigments, ideal for food, pharmaceutical, and semiconductor industries.
Flexible and Easy Installation: Soft and adaptable to uneven surfaces, easy to cut and remove without sticking to flange faces.
Long Service Life: High chemical stability and anti-aging performance minimize maintenance costs and downtime.
Chemical & Petrochemical: Used in reactors, heat exchangers, pumps, and valves for sealing strong corrosive media such as chlorine gas, concentrated sulfuric acid, and strong alkalis.
Pharmaceutical & Biotechnology: Ideal for sanitary piping systems, fermenters, and filtration equipment requiring contamination-free sealing.
Food & Beverage: Withstands high-temperature CIP/SIP cleaning and sterilization cycles without contamination.
Semiconductor & Electronics: Ensures high-purity sealing for chemical delivery systems carrying etching or developing fluids.
Power & Energy: Suitable for FGD systems, LNG facilities, and high-temperature steam pipelines.
Paper & Textile Industry: Perfect for corrosive process stages such as bleaching and dyeing equipment.
Expanded PTFE sheet delivers exceptional sealing performance through its micro-fibrillated structure, offering elasticity, chemical resistance, and adaptability to surface imperfections. It is a reliable, clean, and durable sealing solution suitable for industries ranging from chemical processing to high-purity applications.
