Product Name: Expanded PTFE Gasket (ePTFE Gasket)
Material: 100% Virgin PTFE, expanded by special process
Structure: Microporous fiber network, non-directional
Density: 0.5 – 1.2 g/cm³
Tensile Strength: 10 – 25 MPa
Elongation at Break: 300% – 500%
Dielectric Strength: ≥ 40 kV/mm
Contraction Percentage: ≤ 1.5%
Water Absorption: < 0.01%
Working Temperature: –200°C to +260°C (short-term +280°C)
Working Pressure: Suitable for Class 150 (PN20) and below; up to 10–20 MPa depending on size and operating conditions
Standards: FDA compliant, clean and adhesive-free
Trademark: Chunhuan
Origin: China
Packaging: Standard Export Package
Customization: Available as per request
Engineered for perfection in the most demanding environments, Chunhuan Expanded PTFE (ePTFE) Gaskets represent the pinnacle of sealing technology. Manufactured from 100% pure PTFE through a proprietary expansion process, our gaskets create a unique microporous fibrous network that delivers near-zero leakage. They provide unmatched resistance to extreme temperatures, aggressive chemicals, and corrosive media, making them the trusted sealing solution for critical applications across global industries.
expanded PTFE gasket (1)
Key Features & Benefits:
Unrivaled Chemical Resistance: Virtually inert, our ePTFE gaskets are immune to almost all aggressive chemicals, including strong acids, strong alkalis, and organic solvents, preventing degradation and ensuring long-term seal integrity.
Extreme Temperature Performance: Excel in a breathtaking thermal range from cryogenic temperatures as low as -268°C (liquid nitrogen) to high-temperature steam services up to +280°C, eliminating the need for multiple gasket types.
Superior Sealability & Resilience: The unique microporous structure is soft and highly compressible, allowing it to conform perfectly to flange surface imperfections. Its exceptional elastic recovery (“seal memory”) maintains bolt load, compensates for thermal cycling, and resists cold flow, reducing the need for frequent re-torquing.
Clean & Contamination-Free: Made from 100% pure PTFE without any binders, additives, or fillers. This ensures a ultra-clean, non-contaminating seal critical for semiconductor, pharmaceutical, and food processing applications (FDA compliant).
Reliability & Cost Efficiency: Excellent resistance to creep relaxation and cold flow ensures a stable, reliable seal under low bolt loads, significantly reducing maintenance costs and downtime over the product’s lifespan.
Power Generation: Seals for heat exchangers, pumps, and valves in both conventional and nuclear plants.
Why Choose Chunhuan ePTFE Gaskets?
Proven Quality: Manufactured to the highest international standards.
Custom Solutions: Available in sheets, tapes, and custom-cut shapes to meet your exact specifications (ASME B16.21, DIN, JIS, etc.).
Technical Support: Our engineering team can help you select the right grade and profile for your specific pressure, temperature, and media requirements.
Global Supply: Reliable standard export packaging ensures products arrive in perfect condition, anywhere in the world.
