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Product Description
FG 320 is manufactured from exfoliated graphite through acid treatment with 100% acids washed out by DM water. The manufacturing process is mechanical without incorporation of any additives or bonding material, resulting in flexible pure graphite sheet with carbon content 99% to 99.9%. Highly resilient and easily adapts to irregularities of flange or surface to make perfect seal. Suitable for metallic, glass, and enamel flanges, designed for trouble-free change over which ultimately reduces maintenance cost. Dimensionally stable under extreme pressure surge and suitable for cryogenic services.
Quick Specifications
pH Range
0 - 14 (Universal)
Temperature (°C)
Min -200 to max. 550
Pressure (BAR)
Vacuum 28Hg to 150
Thickness (mm)
0.5 to 6
Technical Data
Specifications
pH Range0 - 14 (Universal)
Temperature (°C)Min -200 to max. 550
Pressure (BAR)Vacuum 28Hg to 150
Thickness (mm)0.5 to 6
Carbon Content99% to 99.9%
Sulphur ContentLess than 750ppm
Chloride ContentLess than 45ppm
Ash ContentLess than 1%
Tolerance on Density±0.05g/cc
Thickness of Sheet0.5mm ~ 6mm
Tolerance on Thickness±0.1mm ~ 0.25
Compressibility (ASTM F36)35-40 %
Recovery (ASTM F36)15-18%
"m" Factor (3mm thick)2.5
"y" Factor (psi)2176
Creep Relaxation (ASTM F38)5%
Ignition Loss %@ 850°F (454°C): 1@ 1022°F (550°C): 8
Sealability (ASTM F37)Fuel A, mL/hr: 0.5Nitrogen, mL/hr: 2.0
DIN 3535-Gas Permeability0.40
Temperature Range-200 to 3315 in reducing condition480 in oxidizing condition550 in steam
Additional Technical Data
MaterialPure exfoliated graphite (99-99.9% carbon)
Manufacturing ProcessMechanical exfoliation with acid treatment, 100% DM water washed
BondingNo additives or bonding materials
Sheet Tolerance0.5mm ~ 6mm (Thickness)
Tolerance on Density±0.05g/cc
Tolerance on Thickness±0.1mm ~ 0.25
Temperature - Reducing-200 to 3315°C
Temperature - Oxidizing480°C
Temperature - Steam550°C
Pressure RangeVacuum 28Hg to 150 BAR
Benefits
Key Features
Ultra-high purity with 99% to 99.9% carbon content
Extreme temperature capability from -200°C to 550°C
Highly resilient and adapts easily to surface irregularities
Dimensionally stable under extreme pressure surge
Suitable for cryogenic services
No additives or bonding materials - pure graphite
Trouble-free installation reduces maintenance costs
Excellent compressibility (35-40%) and recovery (15-18%)
Superior sealability for fuel and nitrogen applications
Low permeability (0.40 nitrogen cc/min)
Use Cases
Applications
Flange sealing in high-temperature and high-pressure systems
Chemical processing and petrochemical industries
Power generation facilities
Oil and gas refineries
Cryogenic sealing applications
Steam and thermal fluid systems
Industrial process equipment
Heat exchangers and boilers
Additional Support?
Contact our sales team for pricing, availability, and technical specifications.