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GRAFOIL® Expanded Mineral Graphite Packing

The packing MG-880-R is made from expanded pure mineral graphite from GRAFOIL®, with corrosion inhibitor and reinforced with wire from Inconel .

The advantages of expanded pure mineral graphite are:

  • Flexibility
  • Compressibility
  • Incombustibility
  • Self-lubricating
  • Compatible with most fluids
  • Unlimited storage period

In order to achieve greater resistance to pressure for use in valves, Inconel wires of 0.1 mm in diameter are incorporated into the braid, thus reducing the possibility of material loss .

Despite this characteristic, in applications such as reciprocating pumps, gate valves, control valves and in conditions where the clearances are greater than 0.35 mm , we recommend the use of rings anti-extrusion of graphite filament braid, reference MG-420

MG 880R Packing Applications

    • Ball valves
    • Valves Gate
    • Valves Balloon
    • Retention valves
    • Valves Butterfly
    • Valves Control
    • Bottom cuba


    • Angle seat


  • butterfly valves
  • Valves Distributors
Other applications:

  • All static equipment at high temperature or applications
    cryogenic (it is the only material that maintains its properties at -165 ºC )
  • In valves and equipment of:
    • Refineries and Petrochemicals
    • Sugar and Wastebaskets
    • Thermal Power Plants
    • Nuclear Power Plants
    • Steelworks and Foundries
    • Naval Industry

Features of the MG 880 R Packing

Gasket MG 880R Maximum values ​​
(on valve)(at pump)(on axis)
Temperature (ºC)– 200 to 650
Pressure (bar)350
Speed ​​(m / s)
MG 880 R Packing