As the professional manufacturers, Kaxite would like to provide you Graphite Die Formed Moulded Rings. And we will offer you the best after-sale service and timely delivery. Flexible graphite die-formed rings are valve stem packing rings manufactured from high purity flexible graphite foil with a corrosion inhibitor but without any binders
Graphite
die formed moulded rings can be produced to precise density and size,
and supplied square section, chamfered, split, matched halves and in
sets with wipers. They can also be supplied with metal reinforcement
wire or with metal end caps for high pressure requirements. These
graphite die formed moulded rings are made from high purity expanded
graphite foil tape with an oxidation inhibitor, they do not contain
binders, elastomers or fillers and they have outstanding chemical
resistance and are unaffected by the majority of the chemical media
within the industry.
We machine
the tools and have the capability to press up to 24". Our skin wrapping
facilities ensure that our graphite gaskets and rings are packaged
securely ready for transit.
Prime features
Graphite
die formed moulded rings can greatly reduce the torque needed for
efficient valve action, save on power consumption and enables smaller
actuators to be used. It lowers the break-out friction for smoother
valve operation, retains exceptionally low friction characteristics for
up to 20,000 valve cycles, and it is subsequent manual adjustment
extends performance to 60,000 cycles, fire-safe capability enables rings
to be used in plant subjected to fire rating tests.
Typical applications
Graphite
die formed moulded rings is used for valves that handle dry gases and
other fluids, where friction on standard graphite seals is unacceptably
high, valves that suffer judder, hesitation or erratic action due to
carbon pick-up or high-spot friction on the spindle.
Data Sheet
Temperature
-
Ash Content
1 - 2%
Min Temp
- 240 °C
Sulphur Content
≤ 300 ppm
Max Temp
500 °C
Fluoride Content
≤ 25 ppm
Density
1.4 - 1.8 g/cm3
Chloride Content
≤ 25 ppm
Graphite Purity
≥ 98%
Ph Value
0 - 14
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