Flexible graphite materials, encompassing sheets, foil, paper, tape, and strips, are engineered specifically for compressor sealing applications. Derived from natural graphite flakes through chemical exfoliation and high - temperature expansion (producing worm - like structures with 0.003g/cc density), these materials are rolled into binder - free coils. This process ensures exceptional purity (≥99.8%) and a unique combination of properties critical for compressor performance.
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Dynamic Pressure Management
- Withstands cyclic pressures up to 200 bar in reciprocating compressors while maintaining 98%+ recovery rate after decompression.
- Low creep relaxation (<2% after 1000 hours at 150°C/100 bar) ensures long - term sealing integrity.
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Thermal & Chemical Resilience
- Operates reliably from cryogenic (-196°C) to superheated steam (+450°C) conditions in rotary screw compressors.
- Resists degradation from compressor oils, refrigerants (R134a, R410A), and hydrocarbon gases.
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Vibration & Wear Resistance
- Graphite’s inherent lubricity reduces friction in moving components, extending seal life by 30% compared to traditional materials.
- Compressive strength of 60 MPa resists deformation in high - torque compressor assemblies.
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Cylinder Head Seals
- Custom - cut gaskets for reciprocating compressors, featuring laser - etched channels to optimize gas flow.
- Composite versions with stainless steel inserts prevent blowout in high - pressure cylinders.
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Piston Rod Seals
- Self - adjusting graphite packing rings maintain consistent pressure on rods, reducing leakage by 40% in continuous operation.
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Valve Plate Seals
- Corrugated graphite sheets create tight seals in reed and poppet valves, improving compressor efficiency by 15 - 20%.
- Sizes:
- Rolls: 1000mm/1500mm width, 30m/50m/80m length.
- Sheets: 1000mm x 1500mm, thicknesses from 0.15mm (valve plates) to 3mm (cylinder gaskets).
- Density: 0.8–1.25 g/cm³ (adjustable to balance softness for rod seals vs rigidity for flanges).
- Special Features:
- PTFE - coated variants for refrigerant compatibility in HVAC compressors.
- Graphite - metal hybrid designs for centrifugal compressor housings.
- Meets API 618 (rotodynamic compressors) and ISO 10434 (reciprocating compressors) standards.
- Tested for gas permeability (ASTM D1434), thermal conductivity (ASTM C518), and fatigue resistance (ASTM D671).
- RoHS/REACH compliant, ensuring safe use in food & beverage and pharmaceutical compressors.
- Proven Track Record: Supplied 500,000+ gaskets to leading compressor manufacturers globally.
- Engineering Expertise: FEA - validated designs for critical applications like hydrogen compression.
- Sustainability: 95% of waste material recycled, with carbon footprint tracking available.
Engineered to deliver leak - free performance in the world’s most demanding compressor systems.