description
for static applications as an O-ring replacement to avoid drilling in the housing, simple installation and higher extrusion resistance.
category of profile
machined or molded/standard/trade product.
advantages
compared with the O-Ring / Back-up Ring combination, the Dualseal offers the following advantages:
- high resistance to twisting
- easy assembly
- long service life
- high extrusion resistance of the material
applications
the dualseal allows general use in hydraulic cylinders e.g.
- fork lifts
- mobile hydraulics
- industrial hydraulics
- machine tools
- injection moulding machines
- hydraulic presses
- cartridge valves
operating parameters & materials
| material | temperature | max. surface speed | max. pressure 1 |
| PU | -30 °C … +110 °C | – | 400 bar (40 MPa) |
| HPU | -20 °C … +110 °C | – | 400 bar (40 MPa) |
| LTPU | -50 °C … +110 °C | – | 400 bar (40 MPa) |
| SLPU | -20 °C … +110 °C | – | 400 bar (40 MPa) |
he stated operation conditions represent general indications. it is recommended not to use all maximum values simultaneously. surface speed limits apply only to the presence of adequate lubrication film.
1 pressure ratings are dependent on the size of the extrusion gap
surface quality
| type of load | surface roughness |
Rtmax (μm) |
Rx (μm) |
Ra (μm) |
| radial – static | mating surface | ≤ 10,0 | ≤ 6,3 | ≤ 1,6 |
| bottom of groove | ≤ 10,0 | ≤ 6,3 | ≤ 3,2 |
tolerance recommendation
| seal housing | tolerances |
| Ød | g6 |
| ØD | H8 |
preferred sealing gap
due to the high extrusion resistance of the seal a radial sealing gap (S) of 0.2 mm can be realised. in case of low temperature applications devia- tions of the gland to the bore and rod shall be avoided.
seal & housing recommendations
please note that we are able to produce those profiles to your specific need or any non standard housing. for detail measurements, please see jet seal pars catalog…
don’t hesitate to contact our technical department for further information or for special requirements (temperature, speed etc.), so that suitable materi- als and/or designs can be recommended.