Cross-section | Profile designation | Application | Operating pressure < MPa | Temperature °C (depending on material) | Glide speed < m/s | Design information | Product details |
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| Q7R | Hydraulics | 70 | -30 to 200 | 0,5 | | |
or
Show general overview | Load overview |
Q7R
The compact rod seal profile Q7R is a combination of a fabric reinforced basic element with a back-up ring from POM (high extrusion security) and a rubber seal part (high sealing effect). The arrangement of the sealing lips and of the lubrication pockets ensures an extremely high compressive strength and wear reduction at the same time.
ADVANTAGES ARE
- Impervious to long downtimes.
- High sealing effect.
- Many compounds available, NBR, FPM, EPDM.
- Materials do not tend to the absorption of water (hydrolysis) - Impervious to vibrations and changes of pressure or movement.
APPLICATION RANGE |
Working pressure: | ≤ 70 MPa (700 bar) |
Working temperature: | - 30 °C to + 110 °C (NBR) |
| - 25 °C to + 200 °C (FKM) |
Surface speed: | ≤ 0,5 m/s |
Applications in sealings at piston rods (pressings), at middle or heavy hydraulics with often changes of pressure and movement.
MATERIAL
NBR-, FPM- or EPDM-based elastomers, as well for the rubber as for the fabric part. Special materials by request.
MOUNTING INSTRUCTIONS
To guarantee a faultless function, the Q7R has to have free play in the axial direction (see table). To avoid damage to the sealing lip, the seals should not be drawn over sharp edges during installation. In normal case the Q7R is mountable in open fitting areas.
For special cases of application (high temperatures, speed, specific pressure, use inwater, HFA-, HFB-fluids etc.) please get in contactwith our consultancy service.
Pressure | Gap e |
MPa | mm |
20 | 0,40 |
25 | 0,30 |
40 | 0,25 |
50 | 0,20 |
70 | 0,15 |
Download | Detailed product information (PDF 400.2 kB)