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GraphMax™
Chesterton GraphMax is a top-tier graphite valve packing engineered for maximum sealing performance in severe conditions. Its dense, die-formed graphite structure offers excellent conformability to valve stems and housing surfaces, providing low emissions, reliable isolation, and extended service life—withstanding high temperatures and pressures typical in industrial, chemical, and power applications.
Treated for low friction and corrosion resistance, GraphMax minimizes gland adjustments and stem wear while maintaining tight control and efficient operation. Compact and easy to install, it’s an ideal choice for minimizing maintenance, reducing emissions, and ensuring valve integrity in demanding environments.
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Product Features
✔ Exclusive construction for plant-wide use in pumps and valves
✔ Maintains structural integrity for easy removal
✔ Carbon fiber-reinforced graphite strands provide maximum extrusion resistance and high-pressure capability
Technical Data ↓
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Boiler feed, condensate, hot water, heater drains, and other high demanding pump applications. Also can be used on valves in hard to seal service.
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Interbraided graphite packing with carbon yarns incorporated in the braided structure in a way that allows a very tight braid
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9.5 ( 0.375 inch )
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25.4 ( 1 )
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3000 PSIg ( 206 BARg )
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400 PSIg ( 28 BARg )
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17 m/s ( 3400 fpm )
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-400 °F ( -240 °C )
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1200 °F ( 650 °C )
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Max temperature limit for steam service
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14 pH
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Except oleum, fuming nitric acid, and aqua regia