Manufactured by molding flexible graphite or flexible graphite braided foil, HPMS
graphite rings are designed to provide excellent sealing functions for valves, pumps,
compressors and chemical instruments.


- Excellent thermal stability: Resistant to low and
high temperatures (-200 to 650
° C) in oxidation
environments and 3000
° C in inert or
reducing environments.
- Chemically inert: Resistant to fluids with pH
range of 0-14 (except strong oxidizers such
as nitric or sulphuric acid).
- Low coefficient of friction.
- Ease of installation.


- High temperature, high pressure steam.
- Hot water, oil, heat exchange fluids.
- Low temperature liquids.
- Organic and inorganic fluids except strong
oxidizer such as nitric or sulphuric acid.
- High temperature and pressure liquid valves.
- High temperature and pressure gas valves.
- High temperature joints.
- Packing rings, turbine rings and piston rings.
- Special vacuum furnace applications.


- Carbon content: 98% to 99.5%
- OD: 2-1100 mm
- Thickness: 0.006” to 0.8”
- Density: various densities up to 1.6 g/cc
- Special sizes are available on request. Please contact us for details.

Graphite Rings

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HP Materials Solutions, Inc.
5850 Canoga Ave, #400, Woodland Hills,  CA 91367, USA    
Tel: 1-888-375-1803  |  Fax: 818-626-8433  |  E-mail: