Graphite packing type EGW and EGW/I
Packing from yarn from exfoliated pure graphite (carbon content, above 98%), led on a cotton rope. Exfoliated graphite, due to its thermal and chemical resistance, self-spreadable properties and good thermal conductivity is perfect for high-temperature braided packing. Substituting inconel reinforcement with a cotton rope lowers mechanical parameters at high temperatures but, as a result, the packing fits more softly into the stuffing box and has a lower friction coefficient. The version with the symbol EGW/I is additionally enriched with a high quality corrosion inhibitor.
Application
Graphite packing is used in rotor pumps, working with high speed up to 25 m/s, mainly in the chemical and power industries:
- for chemically aggressive agent pumps in the power industry,
- sealing high-temperature pumps feeding boilers in the petrochemical industry.
|
DESCRIPTION OF PARAMETER |
VALUE |
|
TYPE |
EGW and EGW/I |
|
Maximum operation temperature in °C |
450 (in anaerobic conditions, up to 2500) |
|
Minimum use temperature in °C |
- 240 |
|
Scope of pH |
0 – 14 |
|
Type of reinforcement |
- |
|
Density in g/cm3 |
1,2 ± 15 % |
|
Centrifugal pumps |
p=40 bar v=25 m/s |
|
Fittings |
p=200 bar v=2 m/s |
|
Colour |
black |
|
Dimensional range in mm |
4 – 50 |
EGW+R – with elastomer core
EWG/R – reinforced with carbon yarn on the corners
6-16 mm – roll at least 2 kg
17-50 mm – roll at least 5 kg
