PTFE packing with graphite filling reinforced with aramid type EPA/R
This packing uses excellent properties of PTFE yarns filled with graphite and silicone oil, supplementing it with generally known mechanical strength of aramid. Special strand allowing to strengthen the corners of the packing with aramid does not deteriorate, at the same time, operation properties of PTFE.
Application
The structure of this packings has been prepared for users of pumps and fittings having problems with highly abrasive utilities. This packing also works perfectly in piston pumps where reciprocating motion rapidly damaged classic sealings. Chemical resistance allows to use this type of packings in water, oils, fuels, solvents, as well as medium-strong acids and alkali. It is applied in chemical, artificial fertilizers and food industry.
|
DESCRIPTION OF PARAMETER |
VALUE |
|
TYPE |
EPA/R |
|
Material |
PTFE yarns filled with graphite |
|
Maximum operation temperature in °C |
280 |
|
Minimum use temperature in °C |
- 100 |
|
Type of reinforcement |
- |
|
Density in g/cm3 |
1,7 ± 15 % |
|
Scope of pH |
2 – 12 |
|
Reciprocating pumps |
p=200 bar v=5 m/s |
|
Centrifugal pumps |
p=50 bar v=25 m/s |
|
Fittings |
p=300 bar v=2 m/s |
|
Colour |
yellow – black |
|
Dimensional range in mm |
6 – 25 |
EPA/R+R – with elastomer core
6-16 mm – roll at least 2 kg
17-30 mm – roll at least 5 kg
