Core Feature: Self-sealing under compression and media pressure
Material: Flexible graphite with optional metal or fiber reinforcement
Temperature Range: -240°C to +600°C (depending on environment)
Pressure Range: 0.1–25 MPa standard, up to 35 MPa reinforced
Friction Coefficient: Low, self-lubricating
Chemical Resistance: Most acids, alkalis, solvents (excluding strong oxidizers)
Form Factor: Rolls, molded rings, braided packing
Application: Pumps, valves, agitators, high-temperature/pressure systems
Self-sealing graphite packing is engineered for demanding environments where high temperature, high pressure, and corrosive or contamination-sensitive media are present. Its unique flexible graphite structure automatically expands under compression and fluid pressure, providing a tight, adaptive seal that compensates for wear and relaxation over time.
Widely used in power generation, chemical processing, petrochemical, pharmaceutical, and industrial sectors, this packing ensures long-lasting, low-friction sealing with minimal maintenance.
Adaptive Self-Sealing: Flexible graphite expands radially under load, filling gaps between shaft and stuffing box, ensuring a consistent, lifetime-tight seal.
Extreme Temperature & Chemical Resistance: Operates from -240°C to +600°C in non-oxidizing environments and resists most acids, alkalis, and organic solvents.
Excellent Self-Lubrication: Layered graphite structure reduces friction and wear, protecting shafts and extending equipment life.
Thermal Conductivity & Safety: Rapid heat dissipation prevents localized overheating; fire-resistant and contaminant-free for clean process applications.
Longevity & Reliability: Outperforms conventional packing, reducing unplanned downtime and maintenance frequency.
Base Material: High-purity natural flake graphite or synthetic graphite processed into flexible graphite (expanded graphite) strips or yarn.
Reinforcement Options: Laminated metal foils (304, 316L stainless steel, Inconel), or blended with fibers (glass, carbon, Inconel alloy) for enhanced strength and extrusion resistance.
Forms Available: Rolls (for onsite cutting), molded rings, braided packing.
Pressure Range: Standard 0.1–25 MPa; enhanced designs up to 35 MPa or more, depending on structure and application.
Temperature Range: Up to 400–450°C in oxidative environments; up to 600°C+ in inert or reducing media.
Energy & Power: Boiler feed pumps, high-pressure valves, steam turbines, heat transfer loops.
Chemical & Petrochemical: Corrosive chemical pumps, reaction vessel agitators, hot oil pumps, compressors, flange sealing.
Pharmaceutical & Food: Sterile pumps, fermenters, zero-contamination CIP/SIP systems.
Metallurgy & Paper: Black liquor pumps, drying drum bearings, high-temperature exhaust valves, thermal recovery systems.
General Industry: Eliminates leakage from thermal cycling, prevents hazardous fluid spills, and reduces maintenance and downtime.
Advanced Material & Structure: High-purity flexible graphite, optionally reinforced with corrosion-resistant metal foils, delivers superior mechanical strength and extrusion resistance.
Multiple Form Options: Rolls, molded rings, and braided packing meet various installation and precision requirements.
Broad Pressure Compatibility: Standard and enhanced versions handle a wide range of pressures, including ultra-high-pressure scenarios.
Installation-Friendly: Flexible, easy to wrap or fit, conforms to irregular surfaces, simplifying on-site maintenance.
Durable & Cost-Effective: Extended service life and low maintenance reduce total cost of ownership.
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