Graphite Packing – Best Choice for High Temperature and High Pressure Applications

Graphite Packing is made of reinforced graphite. The reinforcing materials are various fibers or wires including steel wire, copper wire, nickel wire, carbon fiber, pre-oxidized wire, glass yarn and other reinforced graphite wire.

Graphite packing resists all chemicals across the entire pH range (except fuming sulfuric acid, aqua regia, fuming nitric acid and fluorine). It also has great lubricity and excellent thermal conductivity.

It is widely used in acid and oil production industries Its resilience makes it the perfect sealant for the fuel, chemical, and gas industries.

Common specifications

  • Material: reinforced graphite.
  • Reinforced material: various fibers or wires including steel wire, copper wire, nickel wire, carbon fiber, pre-oxidized wire, glass yarn and other reinforced graphite wire.
  • PH range: 0–14 (Except strong oxidizers).
  • Pressure limit in pumps: 125 psi (8.5 bar).
  • Pressure limit in valves: 2,500 psi (172 bar).
  • Temperature range in non-oxidizing atmospheres: -400 to 6,000 °F (-240 to 3,300 °C).
  • Temperature range in oxidizing atmospheres: -400 to 850 °F (-240 to 454 °C).
  • Temperature range in steam: -400 to 1,200 °F (-240 to 649 °C).
  • Rotary speed: 25 m/s.
  • Density: 1.25 g/cm3.

Features

  • Requires less run-in.
  • Resists many strong chemicals.
  • Low coefficient of friction reduces shaft wear.
  • Good thermal conductivity.
  • Withstands elevated temperatures and aggressive chemicals.
  • Ideal end ring (with GRAPH-LOCK center rings) in valve service.
  • Low chloride certification available.
  • Graphite filament reinforcement resists extrusion in high pressure applications.
  • Convenient spool stock reduces inventory and downtime.
  • Anti-corrosion additive reduces the chance of pitting.
  • Withstand dramatic pressure and temperatures in valves.

Classical applications

  1. Fields:
    • Power plants
    • Pulp & paper industry
    • Refineries & petrochemical plants
    • Waste water treatment
    • Sugar plants
    • Marine services
  2. Equipment:
    • Valves stems
    • Steam service
    • Rotary applications
    • Pumps
    • Agitators
    • Mixers
    • Crystallizers
    • Filters
    • Continuous digesters
    • Reciprocating pump rods
    • Slip-type expansion joints
    • Reactors
    • Autoclaves
    • Hydroelectric turbines
Graphite packing is mounted on blue pump by the hands.

In pump

Graphite packing is mounted on the mixer with red and yellow colors.

In mixer

A valve with a graphite packing structure on a white desk.

In valves

A black braided graphite packing is on the white background.
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