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99.9% High Pure Flexible Graphite Gasket Sheet 1.8g/Cm³ Density

Categories Graphite Gasket Sheet
Brand Name: CLINGSEAL
Model Number: CSG80
Certification: ISO,SGS
Place of Origin: CHINA
MOQ: 500kg
Price: 2.2USD PER KG
Payment Terms: T/T, Western Union, MoneyGram
Supply Ability: 500Tons per month
Delivery Time: 20 days
Packaging Details: pallet/wooden case
Grade: Industrial Grade
Type: Flexible Sheet
Application: gaskets
C content (%): 99.9%
Thickness: Customers' Demand
Material: Graphite,High pure graphite
Machinability: Ease of Cutting/Shaping
Cutting Method: Laser/Waterjet Cutting
Surface Treatment: Smooth/Textured Finish
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99.9% High Pure Flexible Graphite Gasket Sheet 1.8g/Cm³ Density

Products Description

1.8g/cm³ High-Density Flexible Graphite Sheets

Flexible graphite products include sheets, foils, papers, tapes, and strips. These materials are manufactured through chemical intercalation of natural flake graphite followed by high-temperature exfoliation, forming vermicular structures with 0.003g/cm³ density. The expanded graphite is calendared into binder-free rolls, then processed to achieve:

  • 1.8g/cm³ controlled density
  • 99%+ purity
  • Chemical inertness
  • Radiation resistance
  • Thermal stability (-200°C to +650°C)
  • Compression recovery
  • Self-lubricating properties
  • Gas-tight sealing

These features make high-density sheets ideal for demanding sealing applications. Composite options with metal reinforcement available.

Key Applications:

  1. High-pressure packing rings
  2. Custom-shaped gaskets for industrial machinery
  3. Thick insulation pads for high-temperature systems
  4. Sealing components for chemical processing equipment

Technical Specifications:

  • Density: 1.8g/cm³ (customizable from 0.8-2.0g/cm³)
  • Roll Dimensions:
    • Width: 1000mm / 1500mm
    • Length: 30m / 50m / 80m
  • Sheet Size: 1000x1000mm / 1500x1500mm
  • Thickness Range:
    • Rolls: 0.15-1.0mm
    • Sheets: 1.0-5.0mm
  • Material Options: Pure graphite / metal-reinforced composites
ItemStandard Value
C concentration99%
S concentration<1000ppm
chlorine concentration<45ppm
tensile strength4.5MPa
compressibility>40%
recovery>10%
Temperature-200ºC-600ºC
Pressure20MPa
Terence of Thickness-0.04mm~+0.04mm
Terence of DimensionIn accordance with your Gasket size
Terence of Density-0.06~g/cm3+0.06gcm3

Grades Separate :JB/T53392-1999
Mechanical DataQualified productTop GradeSuperior Grade
Density Tolerance
g/cm3
<0.4±0.10
±0.05
0.4±0.07
Tensile Strength MPa3.24.55.0
Compression Ratio %35~55
Rebound Rate %91112
Stress relaxation rate %10
Ash %6.03.01.0
Heat loss on ignation %450ºC1.00.5
600ºC2015

Sulphur content
1500ppm1000ppm600ppm

Chloride content
100ppm50ppm20ppm


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