Engineered Graphite Gasket with Custom Thickness & High Thermal Stability for Deep-Cooling High-Vacuum Installations in Oil & Industrial Processing Sites

Products Description

Product Overview

Key Performance Characteristics

Superior Chemical Resistance

• Exhibits strong resistance to corrosive media including acids, alkalis, hydrocarbons, and oilfield fluids.
• Non-reactive and low-contamination properties ensure safe use in high-purity process systems.
• Ultra-low sulfur and chloride levels prevent alloy corrosion and meet strict industrial processing standards.

Outstanding Thermal Stability

• Wide service temperature range: -200°C to 600°C, maintaining stable performance in deep-cooling and high-temperature thermal cycling environments.
• Low thermal expansion coefficient minimizes dimensional change under rapid temperature fluctuations.
• Excellent structural stability under high vacuum with extremely low outgassing, ideal for vacuum isolation systems.

Reliable Dynamic & Static Sealing

• Self-lubricating surface reduces friction and wear on moving components such as valve stems and seats.
• Dense impermeable structure effectively blocks leakage of gases, liquids, and slurries.
• Balanced compressibility and recovery ensure tight sealing even on imperfect flange surfaces.

Customizable Specifications

Size & Form Options

• Rolls: Width 1000mm / 1500mm; Length 30m / 50m / 80m
• Sheets: 1000mm × 1500mm
• Thickness: from 0.15mm (precision sealing) up to 5mm (heavy-duty applications)
• Density: 0.8–1.25 g/cm³, adjustable to optimize compressibility and pressure resistance

Precision Tolerance Control

Fundamental Material Indicators

Grade Classification & Mechanical Data (JB/T 53392-1999)

Typical Applications in Oil & Industrial Processing

Valve Stem Sealing

• Delivers stable dynamic sealing for gate valves, globe valves, butterfly valves, and control valves.
• Metal-reinforced composite versions available for high-pressure API 6D compliant systems.
• Compensates for stem wear and pressure fluctuations in deep-cooling and vacuum environments.

Flange Gaskets

• Precision-cut to fit ASME B16.5 and custom flange dimensions.
• Ensures leak-free connections in oil pipelines, process reactors, and vacuum equipment.
• Corrugated and reinforced structures improve sealing on irregular or aged mating surfaces.

Vacuum & Process Equipment Seals

• Widely used in high-vacuum chambers, deep-cooling systems, and refining unit closures.
• Ideal for critical sealing points in petrochemical processing, natural gas treatment, and general industrial machinery.

Compliance & Testing Standards

• Meets API 607 fire test requirements for oil and hydrocarbon handling equipment.
• Compliant with ASME BPVC Section VIII for pressure vessel applications.
• Tested per international standards:
  • ASTM F137 – gas leakage performance
  • ASTM F38 – compression stress relaxation
  • NACE TM0177 – chemical compatibility and corrosion resistance
• Manufactured in accordance with JB/T 53392-1999 industrial graphite sealing material specifications.

Why Choose Our Engineered Graphite Gaskets?

• Custom Thickness & Sizing: Full customization available for thickness, shape, and dimension to suit unique equipment layouts.
• Long Service Life: Stable material performance reduces maintenance frequency, supporting over 15 years of continuous operation.
• Cost Efficiency: Minimizes downtime, leakage risks, and replacement costs in harsh oil and industrial environments.
• Professional Technical Support: Provides FEA (finite element analysis) for optimized sealing design in critical applications.
• Flexible Procurement Policy: We primarily serve enterprise and factory procurement clients. Individual buyers are also welcome, with freight charges to be borne by the purchaser.
• Global Shipping: All orders are shipped exclusively from mainland China with reliable logistics arrangements.