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Huaian Dielectric Flange Gasket
QS Gasket: Huaian Dielectric Flange Gasket
Name: Huaian Dielectric Flange Gasket
Standard: ASME B16.5
Material: Gylon 3500
Temperature: -268℃ to 260℃
Size: 2 Inch
Pressure: 150LB
Complete Set: with G10 Sleeve and Washers and ZPS
Compound: with High-performance modified polytetrafluoroethylene
Standard: ASME B16.5
Material: Gylon 3500
Temperature: -268℃ to 260℃
Size: 2 Inch
Pressure: 150LB
Complete Set: with G10 Sleeve and Washers and ZPS
Compound: with High-performance modified polytetrafluoroethylene
Quantity
The Huaian Dielectric Flange Gasket is a precision-engineered sealing solution manufactured from Gylon 3500, a high-performance modified polytetrafluoroethylene material. Designed to ASME B16.5 standards for 2-inch Class 150 flanges, this gasket delivers reliable sealing across an exceptional temperature range of –268 °C to +260 °C, with short-term peaks up to 290 °C . Each complete set includes G10 insulating sleeves, G10 washers, and a ZPS metal hardware kit, providing a comprehensive solution that simultaneously achieves sealing, corrosion protection, and electrical isolation in a single installation.
Material Technology and Performance
The Huaian Dielectric Flange Gasket leverages advanced material science through a three-in-one manufacturing process—modification, filling, and roll-sintering. Micron-sized amorphous SiO₂ is uniformly dispersed within PTFE micro-domains, creating an interpenetrating network of rigid nodes and flexible chains that effectively blocks band-like PTFE slippage while preserving chemical inertness . This proprietary technology results in ASTM F38 creep-relaxation of only 18%, representing a 55% improvement over skived PTFE sheet materials. The ASTM F36 compression-recovery curve demonstrates ≥40% recovery under 15 MPa compressive stress, enabling the Huaian Dielectric Flange Gasket to achieve"zero-visible-bubble"sealing between metallic and plastic flanges with only 25% of the standard bolt load required for ASME B16.5 Class 150 flanges.
The Huaian Dielectric Flange Gasket leverages advanced material science through a three-in-one manufacturing process—modification, filling, and roll-sintering. Micron-sized amorphous SiO₂ is uniformly dispersed within PTFE micro-domains, creating an interpenetrating network of rigid nodes and flexible chains that effectively blocks band-like PTFE slippage while preserving chemical inertness . This proprietary technology results in ASTM F38 creep-relaxation of only 18%, representing a 55% improvement over skived PTFE sheet materials. The ASTM F36 compression-recovery curve demonstrates ≥40% recovery under 15 MPa compressive stress, enabling the Huaian Dielectric Flange Gasket to achieve"zero-visible-bubble"sealing between metallic and plastic flanges with only 25% of the standard bolt load required for ASME B16.5 Class 150 flanges.
Chemical Resistance and Application Performance
As a chemical barrier, the SiO₂-PTFE bond layer exhibits exceptionally low permeability to protonic acids. Independent testing confirms that after 30 days immersion in 98% H₂SO₄ at 90 °C, the Huaian Dielectric Flange Gasket records only 0.08% mass gain and 0.9% thickness swell—significantly outperforming graphite-filled PTFE, which shows 0.6% mass gain and 3.4% swell under identical conditions . This translates to a leak rate reduction of one order of magnitude in aggressive chemical services.
As a chemical barrier, the SiO₂-PTFE bond layer exhibits exceptionally low permeability to protonic acids. Independent testing confirms that after 30 days immersion in 98% H₂SO₄ at 90 °C, the Huaian Dielectric Flange Gasket records only 0.08% mass gain and 0.9% thickness swell—significantly outperforming graphite-filled PTFE, which shows 0.6% mass gain and 3.4% swell under identical conditions . This translates to a leak rate reduction of one order of magnitude in aggressive chemical services.
Industry Applications and Case Studies
The Huaian Dielectric Flange Gasket is widely deployed across demanding industrial sectors:
Petrochemical Processing: In a 600 kt/y alkylation unit, stainless spiral-wound gaskets leaked acid every three months on average. After switching to the Huaian Dielectric Flange Gasket, the unit operated for 24 months maintenance-free, saving 1.1 tons of acid per month and approximately 1.2 million ¥ annually in shutdown costs .
LNG and Cryogenic Services: With a P×T value of 12,000 bar·°C per EN 13555, this gasket performs reliably in LNG loading arms at –163 °C and 4.0 MPa, with gasket factors Gb = 11 MPa, a = 0.18, and Gs = 4.5 MPa ensuring sealability through cryogenic thermal cycling.
The Huaian Dielectric Flange Gasket is widely deployed across demanding industrial sectors:
Petrochemical Processing: In a 600 kt/y alkylation unit, stainless spiral-wound gaskets leaked acid every three months on average. After switching to the Huaian Dielectric Flange Gasket, the unit operated for 24 months maintenance-free, saving 1.1 tons of acid per month and approximately 1.2 million ¥ annually in shutdown costs .
LNG and Cryogenic Services: With a P×T value of 12,000 bar·°C per EN 13555, this gasket performs reliably in LNG loading arms at –163 °C and 4.0 MPa, with gasket factors Gb = 11 MPa, a = 0.18, and Gs = 4.5 MPa ensuring sealability through cryogenic thermal cycling.
Pharmaceutical Manufacturing: A 2021 Chemical Engineering Journal study documented installation on a 20 m³ reactor handling pH 1 hydrochloric-ethanol mixture at 80 °C and 0.3 MPa. After 12 months of continuous operation, the gasket showed only 1.2% thickness change with no delamination or flange pitting .
Regulatory Compliance: The Huaian Dielectric Flange Gasket meets dual FDA 21 CFR 177.1550 and EU 10/2011 standards for direct food contact, and carries German TA-Luft micro-leak approval (VDI 2440) with helium leakage of 10⁻⁵ mbar·l/(s·m) at 40 bar, meeting stringent VOC-control requirements.
Huaian Manufacturing Excellence
The Huaian Dielectric Flange Gasket is manufactured in Huaian City, Jiangsu Province, a region that has emerged as a significant hub for advanced sealing material production in China. Huaian's industrial infrastructure supports comprehensive manufacturing capabilities, from raw material processing to finished gasket fabrication, with facilities specializing in high-performance composite materials and precision sealing solutions . The local manufacturing ecosystem combines technical expertise with quality control systems that ensure each Huaian Dielectric Flange Gasket meets international standards for dimensional accuracy, material consistency, and performance reliability. Production facilities in the Huaian Economic Development Zone maintain rigorous testing protocols, including compression-recovery verification, leak rate assessment, and thermal cycling validation, to deliver products that perform consistently in the world's most demanding industrial environments.
The Huaian Dielectric Flange Gasket is manufactured in Huaian City, Jiangsu Province, a region that has emerged as a significant hub for advanced sealing material production in China. Huaian's industrial infrastructure supports comprehensive manufacturing capabilities, from raw material processing to finished gasket fabrication, with facilities specializing in high-performance composite materials and precision sealing solutions . The local manufacturing ecosystem combines technical expertise with quality control systems that ensure each Huaian Dielectric Flange Gasket meets international standards for dimensional accuracy, material consistency, and performance reliability. Production facilities in the Huaian Economic Development Zone maintain rigorous testing protocols, including compression-recovery verification, leak rate assessment, and thermal cycling validation, to deliver products that perform consistently in the world's most demanding industrial environments.
Conclusion
The Huaian Dielectric Flange Gasket represents a convergence of advanced material technology, rigorous engineering, and precision manufacturing. By integrating sealing, corrosion protection, and electrical isolation into a single component, it provides a zero-leak, long-life solution that reduces maintenance costs and improves operational reliability across petrochemical plants, LNG facilities, pharmaceutical operations, and offshore platforms.
The Huaian Dielectric Flange Gasket represents a convergence of advanced material technology, rigorous engineering, and precision manufacturing. By integrating sealing, corrosion protection, and electrical isolation into a single component, it provides a zero-leak, long-life solution that reduces maintenance costs and improves operational reliability across petrochemical plants, LNG facilities, pharmaceutical operations, and offshore platforms.
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