K39

K39 - Rod Seal
   KASTAŞ NO d(f8) D(H8) B(-0/+0.2) n
 K39-020 20 28 6,3 2,5
 K39-022 22 30 6,3 2,5
 K39-025 25 33 6,3 2,5
 K39-028 28 36 6,3 2,5
 K39-030 30 38 6,3 2,5
 K39-030/1 30 42 9 3
 K39-035 35 43 6,3 2,5
 K39-040 40 48 6,3 2,5
 K39-045 45 55 8 3
 K39-050 50 60 8 3
 K39-055 55 65 8 3
 K39-060 60 70 8 3
 K39-065 65 77 9,5 3
 K39-110 110 125 12 4.5

K39 is a single acting rod seal which consists of reinforced cotton fabric and nitrile rubber vulcanized together forming an integral sealing element.



AVANTAJLARI
•Functions evenwith poor surfaces
•Reinforced cotton fabric base prevents the seal from extrusion
•Good sealing at low pressures

APPLICATION
Mobile hydraulics and Standard cylinders
 
MATERIAL CODE
NBR 80 SHORE A NB8001
COTTON FABRIC NBR   FB8001
OPERATING CONDITIONS
MEDIA Mineral oils (DIN 51524)  HFA and HFB HFC
TEMPERATURE -30°C +105°C +5°C +60°C -30°C +60°C
PRESSURE ≤250 Bar ≤250 Bar ≤250Bar
SPEED ≤0.5 m/sn ≤0.5 m/sn ≤0.5 m/sn
Note: The above data are maximum values and cannot be used at the same time.

    

 
SURFACE ROUGHNESS Ra Rmax
Sliding Surface Ød ≤0.4 μm ≤3.2μm
Groove Base ØD ≤1.6 μm ≤10 μm
Groove Flanks B ≤3.2 μm ≤16 μm

Note: It is recommended to have 50% to 90% of the working surface material contact area value.
 

INSTALLATION
K39 is to be assembled into open grooves if rod diameter is less than 40 mm. It is very important that the assembly tools must be of soft material and have no sharp edges. Before installation the sealing elements must be oiled with system oil.
 

NOTES
The permissible sealing gap values of K39 rod seal is given in the below table.
 
PERMISSIBLE SEALING GAP
   Pressure (Bar) Smax (mm)
150 0.2
250 0.1

Note: The largest sealing gap value occuring 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.