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ePTFE sheets are produced from expanded PTFE (Polytetrafluoroethylene) through a unique expansion process, resulting in a microporous, compressible structure with superior sealing and chemical resistance. They are widely used in flange gaskets, industrial sealing, and electrical insulation where traditional PTFE sheets may not provide sufficient conformability.
Product Description
ePTFE (expanded PTFE) sheets are flexible sealing and insulation materials produced by expanding PTFE into a fibrillated, microporous structure. Compared to virgin PTFE sheets, ePTFE sheets offer better compressibility, creep resistance, and adaptability to uneven flange surfaces, making them excellent gasket materials.
They retain PTFE’s outstanding chemical inertness, non-stick surface, and thermal endurance (-200℃ to +260℃), while also being lightweight and easier to conform to sealing surfaces.
Key Features:
Excellent chemical resistance to acids, alkalis, and solvents
Microporous structure: flexible, compressible, and conformable
Wide temperature range: -200℃ to +260℃
Low creep and cold flow compared to PTFE sheets
Excellent electrical insulation properties
Non-toxic, suitable for food and medical applications
Weather-resistant and UV stable for long-term outdoor use
Sealing: Flange gaskets, valve seals, pump gaskets
Industrial: Chemical processing sealing sheets, pipeline flanges
Electrical: Insulating spacers, dielectric plates
Medical & Food: Hygienic sealing and barrier applications
Venting & Filtration: Where breathable yet chemical-resistant materials are needed
Material: Expanded PTFE (microporous PTFE)
Thickness Range: 0.5 mm – 10 mm (customizable)
Sheet Size Options: 600 × 600 mm, 1000 × 1000 mm, 1500 × 1500 mm (custom sizes available)
Density: 0.5 – 1.0 g/cm³ (depending on expansion)
Service Temperature: -200℃ ~ +260℃
Compressibility: High, suitable for sealing uneven surfaces
Dielectric Strength: Excellent, depending on thickness
Color: White
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Email : Henry@raw-teflon.com Whatsapp : +852-64764265 Mobile : +86-13554935332
