CPV-439-J1SRubber-energized polyurethane piston seal
CPV seals are inch sized, double-acting piston seals with a polyurethane slide ring and a nitrile rubber O-ring energizer. Notches in the slide ring edges enable rapid pressurization of the seal to react quickly to changes in pressure and direction. These profiles can usually be installed without special equipment.
Dimensions
| D |
177.85 mm
|
Cylinder bore diameter |
|---|---|---|
| d |
165.81 mm
|
Piston groove diameter |
| L |
9.53 mm
|
Piston groove width |
| S |
6.02 mm
|
Radial depth |
| R |
max. 0.81 mm
|
Groove radius |
| C |
min. 4.75 mm
|
Lead-in chamfer length |
| tol D |
0.05 mm
|
Upper limit deviation |
|---|---|---|
|
0 mm
|
Lower limit deviation | |
| tol d |
0 mm
|
Upper limit deviation |
|
-0.1 mm
|
Lower limit deviation | |
| tol L |
0.127 mm
|
Upper limit deviation |
|
0 mm
|
Lower limit deviation |
Maximum extrusion gap
| Reference temperature for extrusion gap |
80 °C
|
|
| Extrusion gap at 160 bar | e |
0.36 mm
|
| Extrusion gap at 250 bar | e |
0.25 mm
|
| Extrusion gap at 340 bar | e |
0.15 mm
|
Pressure and speed
| Pressure |
max. 340 bar
|
| Speed at pressure ≤ 250 bar |
1 m/s
|
| Speed at pressure ≤ 340 bar |
0.5 m/s
|
Operating temperature
| T6 |
max. 120 °C
|
Extreme upper temperature limit |
|---|---|---|
| T5 |
max. 110 °C
|
Reduced performance upper temperature limit |
| T4 |
max. 100 °C
|
Upper operating temperature limit |
| T3 |
min. -20 °C
|
Lower operating temperature limit |
| T2 |
min. -30 °C
|
Reduced performance lower temperature limit |
| T1 |
min. -40 °C
|
Extreme lower temperature limit |
|
Maximum values of application parameters (e.g. pressure, speed, temperature, e-gap) should not be applied continuously nor simultaneously.
|
||
Materials
| Primary sealing element |
Polyurethane (TPU U-1003)
|
| Additional element |
Nitrile Rubber (NBR A-8501)
|
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