Expanded Mineral Graphite Packing for Valves

The MG-780-R gasket is made from
pure mineral graphite expanded of the highest quality, with Inconel .

The MG-780-R gasket has the API607 fire test (API 589 edition fire safe test approval) that allows its use in highly responsible equipment.

The advantages of expanded pure mineral graphite:

  • Flexibility
  • Compressibility
  • Incombustibility
  • Self-lubricating
  • Compatible with most fluids
  • Storage period is unlimited.
  • Also available with carbon reinforcement , ref. MG-780-C

In order to achieve greater resistance to pressure for use in valves, the braid incorporates Inconel wires of 0.1 mm in diameter, thus reducing the possibility of expansion
of the braid.

In applications such as reciprocating pumps, gate valves, control valves and in conditions where clearances are greater than 0.35 mm, the use of anti-extrusion rings made of graphite filament braid is recommended. , reference MG-420.

MG 780R 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 780 R Packing

Gasket MG 780R Maximum values ​​
(on valve)(at pump)(on axis)
Temperature (ºC)– 200 to 650
Pressure (bar)310
Speed ​​(m / s)
MG 780 R packing