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Tailored Thickness Flexible Graphite Gasket with Superior Heat Stability for Deep-Cooling Vacuum Systems in Petroleum & Industrial Processing

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Tailored Thickness Flexible Graphite Gasket with Superior Heat Stability for Deep-Cooling Vacuum Systems in Petroleum & Industrial Processing

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

C content (%) : 99.9%

Density : Specific Gravity

Type : Flexible Sheet

Thickness : Customizable

Material : High-Pure Graphite，Graphite,

Surface Treatment : ：Smooth/Textured Finish

Industry Application : Oil & Gas, Chemical, Power

Elongation At Break : 5%

Surface : 2B/BA/NO.1/NO.4/HL/8K

Certiificate : BUA

Wear Resistanc : Long - Lasting Surface

Pressurerating : Up to 40 MPa

Ce Marking : CE - Certified

Recovery : 30% to 50%

Origin : Jiangsu China(Mainland)

Application : Sealing in chemical, petrochemical, and power industries

Impact Resistance : Shock Absorption

Recyclability : Environmentally Friendly

Forms : Coil ,strip ,foil

Iso Certification : ISO 9001/14001

Fatigue Resistance : Repeated Stress Resistance

Compressive Strength : Max Pressure Resistance

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Tailored Thickness Flexible Graphite Gasket with Superior Heat Stability for Deep-Cooling Vacuum Systems in Petroleum & Industrial Processing Facilities

Products Description

Cling‑Seal flexible graphite gaskets with tailored thickness are purpose-built to perform reliably in harsh operating environments, especially deep‑cooling circuits and high‑vacuum systems widely used in petroleum refineries, chemical plants, and general industrial processing facilities. Combining high purity, exceptional thermal stability, and fully customizable dimensions, our products provide long‑lasting, leak‑tight sealing performance under extreme temperature, pressure, and corrosive conditions.

Manufacturing Process

Our graphite material starts with high‑purity natural graphite flakes, which are chemically intercalated then rapidly thermally expanded at 800–1000°C. This process creates worm‑structured expanded graphite with a bulk density of approximately 3 kg/m³. Without binders or chemical additives, the expanded graphite is compacted into rolls or sheets, delivering consistent performance and carbon purity above 99% — ideal for vacuum compatibility and low outgassing.

Product Portfolio

We offer a full range of flexible graphite products to support custom gasket manufacturing and on‑site processing:
  • Expanded graphite sheets
  • Graphite foil
  • Graphite tape
  • Graphite strips
  • Graphite paper

Standard Specifications

We provide standardized coil and sheet configurations to fit diverse cutting, stamping, and assembly requirements.
Parameter Coil Product Sheet Product
Width 1000mm / 1500mm 1000mm / 1500mm
Length 30m / 50m / 80m —
Thickness 0.15–1.0mm 1.0–5.0mm
Density 0.8–1.25 g/cm³ 0.8–1.25 g/cm³
Note: Custom thickness, sizes, and metal‑reinforced composite structures are available for OEM and project‑specific demands.

Core Physical & Chemical Properties

These performance values ensure stable behavior in deep‑cooling, high‑vacuum, and petroleum processing environments.
Item Standard Value
Carbon Concentration 99%
Sulfur Concentration ＜1000 ppm
Chlorine Concentration ＜45 ppm
Tensile Strength 4.5 MPa
Compressibility ＞40%
Recovery Rate ＞10%
Operating Temperature -200°C ~ 600°C
Working Pressure Up to 20 MPa
Thickness Tolerance -0.04mm ~ +0.04mm
Dimension Tolerance Custom per drawing
Density Tolerance -0.06 ~ +0.06 g/cm³

Grade Classification (JB/T 53392-1999)

Three quality grades to meet different industrial standards, equipment criticality, and project specifications.
Mechanical Data Qualified Product Top Grade Superior Grade
Density Tolerance
＜0.4 g/cm³
≥0.4 g/cm³		 ±0.10
±0.07		 ±0.05 ±0.05
Tensile Strength (MPa) ≥3.2 ≥4.5 ≥5.0
Compression Ratio (%) 35–55 35–55 35–55
Rebound Rate (%) ≥9 ≥11 ≥12
Stress Relaxation Rate (%) ≤10 ≤10 ≤10
Ash Content (%) ≤6.0 ≤3.0 ≤1.0
Heat Loss 450°C / 600°C ≤1.0 / ≤20 ≤0.5 / ≤15 ≤0.5 / ≤15
Sulfur Content (ppm) ≤1500 ≤1000 ≤600
Chloride Content (ppm) ≤100 ≤50 ≤20

Key Performance Advantages

  • Superior Thermal & Vacuum Stability
    Stable performance from deep‑cooling low temperatures to high‑temperature cycling; low outgassing and excellent dimensional stability for high‑vacuum environments.
  • Strong Chemical Compatibility
    Resists acids, alkalis, hydrocarbons, and petroleum media; low sulfur and chlorine prevent alloy corrosion in critical processing equipment.
  • Excellent Mechanical Sealing Performance
    High compressibility and rebound ensure tight sealing even on imperfect flange surfaces; stable under pressure fluctuations and long‑term service.
  • Customizable Composite Structure
    Can be laminated with stainless steel or copper alloy for reinforced gaskets, improving strength for heavy‑duty flange and valve applications.

Typical Applications

  • Dynamic sealing: shaft packing, valve stem seals, and pump seals
  • Custom flange gaskets for pipelines, pressure vessels, and reactors
  • Sealing components for high‑vacuum chambers and deep‑cooling systems
  • Thermal barriers and static seals in petroleum and heavy industrial facilities

Cling-Seal Supply & Service Terms

  • Primary Customers: Mainly overseas corporate buyers, factory procurement teams, engineering contractors, and OEM industrial clients.
  • Shipping Location: All products shipped exclusively from China.
  • Individual Buyers: Orders are accepted only if buyers cover the full international freight cost for single‑piece dropshipping. Orders cannot be processed without confirmed freight arrangements.

Tailored Thickness Flexible Graphite Gasket with Superior Heat Stability for Deep-Cooling Vacuum Systems in Petroleum & Industrial Processing

Tailored Thickness Flexible Graphite Gasket with Superior Heat Stability for Deep-Cooling Vacuum Systems in Petroleum & Industrial Processing

Tailored Thickness Flexible Graphite Gasket with Superior Heat Stability for Deep-Cooling Vacuum Systems in Petroleum & Industrial Processing


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