Due to the special profile it can be used in pair or in front of the u-ring .
Long service life
High sliding speed
Wide range of temperature and chemicals depending on the o-ring material
Minimum static and dynamic friction coefficient for a minimum energy loss and operating temperature
Simple groove design and low axial housing heights
operation principle
We recommend using special assembly tool (See section; Hydraulic Sealing Elements General Installation Information). It is very important that the assembly tools must be of soft material and have no sharp edges. Before installation the sealing element must be oiled with system oil.
Mineral oils
from -30°C till +105C
max. 400 Bar
max. 5.0 m/s
HFA and HFB
from +5°C till +60°C
max. 400 Bar
max. 5.0 m/s
HFC
from -30°C till +60°C
max. 400 Bar
max. 5.0 m/s
Options
0710 type of rod seal can be also used with double lip wipers. For special applications that require high temperatures or resistance to chemicals , piston seal is being manufactured with special mixture PTFE and FKM material. For heavy duty applications and high pressures the tolerances should change to H8/f8 and please contact the customer service to choose the suitable sealing element. The permissible sealing gap values of type 0710 rod seal is given in the below table.
Tables
OPERATING CONDITIONS
MEDIA
Mineral oils (DIN 51524)
HFA and HFB
HFC
TEMPERATURE
from -30°C till +105°C
from +5°C till +60°C
from -30°C till +60°C
PRESSURE
max. 400 Bar
max. 400 Bar
max. 400 Bar
SPEED
max. 5.0 m/s
max. 5.0 m/s
max. 5.0 m/s
Note: The above data are maximum values and cannot be used at the same time.
SURFACE ROUGHNESS
Ra
Rmax
Sliding Surface
max. 0.2 µm
max. 2.0 µm
Groove Base
max. 1.6 µm
max. 6.3 µm
Groove Flanks
max. 3.2 µm
max. 15 µm
Note: It is recommended to have 50% to 90% of the working surface material contact area value.
PERMISSIBLE SEALING GAP
B (mm)
Smax (mm)
x
150 Bar
250 Bar
400 Bar
2.2
0.25
0.15
0.10
3.2
0.35
0.20
0.10
4.2
0.35
0.20
0.15
6.3
0.45
0.30
0.20
8.1
0.6
0.35
0.25
9.5
0.7
0.50
0.30
Note: The largest sealing gap value occurring on the non-pressurized side of the seal does have a vital importance for the function of the seal and in this respect it is quite important to use the S value lower than the above indicated numbers.
