About PTFE +Spring Piston Rod Seal
DESCRIPTION :
-One-sided with pressure applied to seal
-Metal spring is used as pre-load component for the sealing lips
-System pressure overrides the pre-load during operation.
ADVANTAGES:
-Small housing -Suitable for high pressures and vacuum
-Universal chemical resistance -Large temperature range
-Good dry running properties -Low friction forces
-Free of stick-slip -Resistant to ageing
-Permanently elastic due to metal spring.
-Suitable for stroke, rotary, pivoting movements and for static applications
APPLICATION:
Fittings manufacture, general chemistry, mechanical engineering,foodstuffs industry, pharmaceuticals, petrochemicals. e.g. ball cocks, flanges/covers, rotary joints and manifolds, hot water and steam valves, valve journals, control shafts, reciprocating pumps, bearings.
| The Detailed Index of PTFE |
| Material |
Color |
Hardness |
Work Temperature |
Density |
Elongation at break |
Tensile StrengthTest |
| / |
/ |
Shore D |
ºC |
g/cm³ |
% |
N/mm² |
| Standard |
/ |
DIN53505 |
/ |
EN ISO 1183 |
DIN53504/53455 |
| Pure Tetrafluoroethylene |
PTFE |
White |
57 |
-200~260
|
2.17 |
300 |
27 |
| 80%TFE +15%Glass Fiber+5%Molybdenum Disulfide |
PTFE-1 |
Gray |
60 |
2.25 |
200 |
18 |
| 60%TFE+40%Bronze |
PTFE-2 |
Bronze |
64 |
3 |
280 |
22 |
| 75%TFE+25%Carbon Fiber |
PTFE-3 |
Black |
65 |
2.1 |
150 |
15 |
| Improved Pure Tetrafluoroethylene |
PTFE-4 |
White |
59 |
2.16 |
360 |
30 |
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