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Quanzhou C4400 Gasket
QS Gasket: Quanzhou C4400 Gasket
Name: Quanzhou C4400 Gasket
Standard: ASME B16.5
Material: Klingersil C4400
Max Temperature: 400℃
Size: 6 Inch
Pressure: 150LB
Complete Set: with G10 Sleeve and Washers and ZPS
Compound: with Aramid Fiber Reinforced with a Nitrile Binder
Standard: ASME B16.5
Material: Klingersil C4400
Max Temperature: 400℃
Size: 6 Inch
Pressure: 150LB
Complete Set: with G10 Sleeve and Washers and ZPS
Compound: with Aramid Fiber Reinforced with a Nitrile Binder
Quantity
The Quanzhou C4400 Gasket is a high-performance non-metallic isolation gasket manufactured from Klingersil C4400, a compressed fibre material combining aramid fibre reinforcement with a nitrile-butadiene rubber (NBR) binder . This 6-inch, Class 150 LB gasket complies fully with ASME B16.5 dimensional standards and is rated for continuous service up to 400°C with a maximum pressure capacity of 100 bar (10 MPa) .
Each complete set includes the C4400 gasket body, G10 insulating sleeves, insulating washers, and the ZPS electrostatic protection system – delivering both sealing integrity and electrical isolation in a single assembly.
Technical Specifications
The material exhibits a density of approximately 1.6 g/cm³ and is available in thicknesses from 0.5 mm to 3.0 mm, with dimensional tolerances conforming to DIN 28091-1 . Key mechanical properties include compressibility of 11% (ASTM F36A), recovery of 55%, and tensile strength of 15 MPa (ASTM F152). Gas leakage rate is 0.2 ml/min (DIN 3535/6) with tightness of 0.02 mg/(s·m) (DIN 28090-2) .
Electrical insulation performance is notable: average dielectric strength reaches 21.6 kV/mm with surface resistivity of 1.4 × 10¹² Ω, making this gasket ideal for cathodic protection and stray current isolation applications .
The material exhibits a density of approximately 1.6 g/cm³ and is available in thicknesses from 0.5 mm to 3.0 mm, with dimensional tolerances conforming to DIN 28091-1 . Key mechanical properties include compressibility of 11% (ASTM F36A), recovery of 55%, and tensile strength of 15 MPa (ASTM F152). Gas leakage rate is 0.2 ml/min (DIN 3535/6) with tightness of 0.02 mg/(s·m) (DIN 28090-2) .
Electrical insulation performance is notable: average dielectric strength reaches 21.6 kV/mm with surface resistivity of 1.4 × 10¹² Ω, making this gasket ideal for cathodic protection and stray current isolation applications .
Applications
The Quanzhou C4400 Gasket is widely specified across petrochemical processing, power generation, and marine industries. It demonstrates broad chemical resistance to oils, hydrocarbons, water, steam, gases, salt solutions, fuels, alcohols, and moderate acids . The G10 sleeve and ZPS system provide critical flange insulation in offshore platforms, pipeline isolation joints, and refinery cracking units where electrical separation is mandatory.
The Quanzhou C4400 Gasket is widely specified across petrochemical processing, power generation, and marine industries. It demonstrates broad chemical resistance to oils, hydrocarbons, water, steam, gases, salt solutions, fuels, alcohols, and moderate acids . The G10 sleeve and ZPS system provide critical flange insulation in offshore platforms, pipeline isolation joints, and refinery cracking units where electrical separation is mandatory.
Manufacturing in Quanzhou
Quanzhou, Fujian Province, has emerged as a significant hub for industrial gasket manufacturing, with established producers supplying both domestic and international markets . The city benefits from mature supply chains, advanced rubber compounding and moulding technologies, and ISO-certified production facilities . This Quanzhou C4400 Gasket represents the region's capability to produce high-quality, internationally certified sealing solutions that meet rigorous ASME and DIN standards while maintaining competitive pricing.
Quanzhou, Fujian Province, has emerged as a significant hub for industrial gasket manufacturing, with established producers supplying both domestic and international markets . The city benefits from mature supply chains, advanced rubber compounding and moulding technologies, and ISO-certified production facilities . This Quanzhou C4400 Gasket represents the region's capability to produce high-quality, internationally certified sealing solutions that meet rigorous ASME and DIN standards while maintaining competitive pricing.
Quality Assurance
The Quanzhou C4400 Gasket is manufactured to strict quality control protocols, with independent third-party testing verifying ASME Code sealing factors (y = 15 MPa, m values from 1.2 to 4.0 depending on thickness) . Stress relaxation at 300°C is controlled to 25 MPa after 16 hours (BS 7531), ensuring long-term bolt load retention . The green-coloured material surface is printed for traceability, and standard sheet dimensions of 1000 × 1500 mm or 2000 × 1500 mm allow custom fabrication for non-standard flange configurations .
The Quanzhou C4400 Gasket is manufactured to strict quality control protocols, with independent third-party testing verifying ASME Code sealing factors (y = 15 MPa, m values from 1.2 to 4.0 depending on thickness) . Stress relaxation at 300°C is controlled to 25 MPa after 16 hours (BS 7531), ensuring long-term bolt load retention . The green-coloured material surface is printed for traceability, and standard sheet dimensions of 1000 × 1500 mm or 2000 × 1500 mm allow custom fabrication for non-standard flange configurations .
Summary
The Quanzhou C4400 Gasket delivers proven sealing performance, creep resistance, and electrical isolation in demanding high-temperature applications, backed by Quanzhou's established manufacturing expertise and global certification standards.
The Quanzhou C4400 Gasket delivers proven sealing performance, creep resistance, and electrical isolation in demanding high-temperature applications, backed by Quanzhou's established manufacturing expertise and global certification standards.
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