High Purity Graphite Sheet for Extreme Temperature & Chemical Resistant Gasket Manufacturing
Premium flexible graphite sheets manufactured from 98%+ pure expanded graphite, available in pure, reinforced (SS316/SS304 insert), and laminated configurations. Engineered for exceptional thermal stability, universal chemical resistance, and fire-safe performance. Ideal for high-temperature flange gaskets, packing rings, and custom die-cut sealing components in power generation, petrochemical, refining, and pharmaceutical industries. Available in custom sheet sizes, thicknesses, and grades for global OEM and MRO supply.
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Graphite Sheet Types & Configurations
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Graphite Sheet Technical Specifications
Manufactured from high-purity flexible expanded graphite with optional stainless steel reinforcement — delivering exceptional thermal stability, universal chemical resistance, and fire-safe sealing performance for demanding gasket manufacturing and flange connections.
📋 Product Parameters
| Material | Flexible Expanded Graphite (98%+ Carbon Content) |
| Reinforcement Options | Pure Graphite, SS304/SS316 Insert, Laminated Graphite |
| Thickness | 0.5mm – 3.0mm (standard: 1.0mm, 1.5mm, 2.0mm, 3.0mm) |
| Sheet Size | 1000mm × 1000mm, 1500mm × 1500mm, 1000mm × 2000mm, custom sizes available |
| Manufacturing Method | Expanded Graphite Compression, Lamination, Die-Cutting |
| Packaging | Sheets in cartons / wooden crates, or die-cut pieces / gasket kits |
🔬 Performance Characteristics
| Temperature Resistance | -200°C to +450°C (oxidizing atmosphere) up to +3000°C (inert or reducing atmosphere) |
| Pressure Resistance | Up to 100 bar (10 MPa) depending on sheet type and thickness |
| pH Range | 0 – 14 (universal chemical resistance, except strong oxidizers) |
| Density | 1.0 – 1.2 g/cm³ (typical for pure graphite sheet) |
| Carbon Content | ≥98% (standard grade) / ≥99% (nuclear grade) |
| Compressibility / Recovery | 15-25% compression / ≥10-15% recovery (ASTM F36) |
💡 Custom Graphite Sheet Solutions
We provide customized graphite sheet solutions including special thickness, dimensions, reinforcement options, and die-cut configurations. Send your gasket specifications, pressure/temperature requirements, or technical drawings for professional evaluation and tailored recommendations. Our engineers will help you select the optimal graphite sheet grade for maximum sealing reliability and fire-safe performance.
Why Choose Our Graphite Sheets
Reliable high-temperature sealing solutions designed for gasket manufacturing and flange connections in demanding industrial applications. We don't just manufacture — we engineer sealing materials that meet the rigorous standards of global industrial buyers.
Extreme Temperature Resistance
Graphite sheets maintain excellent sealing integrity from cryogenic temperatures to +450°C in oxidizing environments, making them ideal for steam, hot oil, and high-temperature process piping systems.
Universal Chemical Resistance
High-purity graphite is virtually inert to all chemicals across the full pH range (0-14), except strong oxidizing agents. Ideal for aggressive chemical and petrochemical processing applications.
Fire-Safe & API 607 Compliant
Graphite gaskets maintain their sealing integrity even in fire conditions, meeting API 607 and fire-safe certification requirements for critical valve and piping applications.
Precision Die-Cutting & Lamination
Advanced die-cutting and lamination ensure accurate dimensions, clean edges, and consistent quality for all custom gasket configurations and sheet sizes.
Application-Specific Engineering
We analyze your pressure, temperature, and media to recommend the optimal graphite sheet type, thickness, and reinforcement for your specific sealing needs.
OEM & Global Export Supply
Flexible production capability for gasket manufacturers, distributors, and industrial maintenance projects worldwide. Professional export packaging and documentation.
Graphite Sheet Applications
Our graphite sheets are widely used for high-temperature, high-pressure, and chemically aggressive gasket manufacturing across global industrial sectors. We provide tailored solutions for each specific operating condition.
Power Generation
Gasket manufacturing for steam turbine flanges, boiler manholes, and high-pressure steam line sealing in thermal, nuclear, and combined-cycle plants.
Petrochemical & Refining
Flange gasket production for high-temperature hydrocarbon transfer, heat exchangers, and reactor sealing in refineries and petrochemical facilities.
Chemical Processing
Corrosion-resistant gasket sheets for acid, alkali, and solvent piping systems, reactors, and process equipment.
Pharmaceutical Industry
High-purity graphite sheets for sanitary and high-purity process gaskets, reactors, and filtration equipment.
Valve & Pump Gasket Manufacturing
Bonnet gaskets, cover seals, and custom die-cut components for high-temperature and high-pressure valves and pumps.
Marine & Offshore
Exhaust system flange gaskets, heat exchanger sealing, and high-temperature piping on ships and offshore platforms.
Pipeline & Piping Systems
High-temperature flange gasket sheets for steam distribution, hot oil transfer, and chemical process piping.
OEM Equipment Manufacturing
Custom graphite sheet supply to boiler, heat exchanger, valve, and piping equipment manufacturers as original components.
Why Choose Hongwo Sealing Solutions
A trusted manufacturing and engineering partner serving global industrial buyers with high-performance graphite sheet solutions. We combine direct factory pricing, technical expertise, and reliable export logistics.
- ✓ Direct Factory Manufacturing — Own production capability ensures stable quality, competitive pricing, and reliable supply for graphite sheet products.
- ✓ Application Engineering Support — Our technical team evaluates your flange pressure, temperature, and media to recommend the optimal graphite sheet type and thickness for maximum sealing life.
- ✓ Advanced Die-Cutting & Lamination — CNC die-cutting and lamination machines ensure precise dimensions, clean edges, and consistent quality for all custom gasket configurations.
- ✓ OEM Custom Solutions — Manufacture sheets according to customer drawings, dimensions, and specific technical requirements for gasket converters, valve, and heat exchanger manufacturers.
- ✓ Strict Quality Inspection — Inspection of graphite purity, thickness, density, carbon content, and compression/recovery properties on every batch.
- ✓ Global Export Experience — Professional export packaging, documentation, and international logistics support for customers in over 50 countries.
Quality Control & Manufacturing Standards
Every graphite sheet product is manufactured and inspected according to strict ISO 9001 quality management procedures, ensuring consistent performance and reliability for global industrial buyers.
ISO 9001:2015
Certified Quality Management
API 607 / Fire-Safe
Fire-Safe Compliance Certified
Material Testing
Carbon Content & Density Verification
Dimension Control
Thickness, Sheet Size & Die-Cut Precision
Export Packaging
Safe International Delivery
Frequently Asked Questions
Common questions from international buyers about graphite sheet selection, customization, and global supply.
Get Your Graphite Sheet Quote Today
Tell us your gasket specifications and sealing requirements. Our engineers will provide a tailored graphite sheet solution with competitive factory-direct pricing.
- Factory direct quotation
- Application-specific recommendations
- Custom sheet & die-cut sizes
- Fire-safe certified options
- Worldwide export service
Request Your Quote
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