Note: The above data are maximum values, they may only be maintained for short periods of time and cannot be used at the same time simultaneously.
Surface roughness
Ra
Rmax
Sliding Surface
<=0,4 µm
<=3,2 µm
Groove Base
<=1,6 µm
<=10 µm
Groove Flanks
<=3,2 µm
<=16 µm
Maximum permissible sealing gap - S (mm)
Cross-section = (D-d)/2
150 bar
250 bar
400 bar
<=5
0,30
0,20
0,15
>5
0,35
0,25
0,20
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 very important to use an S value lower than the above indicated numbers.
