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K22 is a single acting rod seal designed to have inner lip shorterthan the outer lip in order to be used for rod applications.

PRODUCT ADVANTAGES
• Superior static and dynamic sealing effect
• Wide range of dimensions
• Easy assembly into closed grooves
• Simple groove design
• Economical sealing solution

APPLICATION
Construction machinery , fork-lift trucks , injection mouldingmachines , agricultural machinery , loading platforms and standardcylinders.

MATERIAL   CODE
NBR 90 SHORE A NB9001
PU  92 SHORE A PU9201
OPERATING CONDITIONS
NBR
MEDIA Mineral oils(DIN 51524)  HFA and HFB HFC
TEMPERATURE -30°C +105°C +5°C +60°C -30°C +60°C
PRESSURE ≤150 Bar ≤150 Bar ≤150 Bar
SPEED ≤0.5 m/sn ≤0.5 m/sn ≤0.5 m/sn
PU
MEDIA Mineral oils(DIN 51524)  HFA and HFB HFC
TEMPERATURE -30°C +100°C +5°C +50°C -30°C +40°C
PRESSURE ≤400 Bar ≤400 Bar ≤400 Bar
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 ≤3.2 μm
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
Easily assembled into closed grooves according to the minimum diameter values that are given in the below table. Open grooves or special assembly tools should be used for the values that are outside this table. It is very important that the assembly tools must be of soft material and have no sharp edges. Before installation the rod seal must be oiled with system oil.
 

MINUMUM DIAMETER VALUES FOR CLOSED TYPE OF GROOVES
(D-d)/2 (mm) 4 5 6 7.7 10 12.5 15
dmin (mm) 25 30 40 50 80 100 105

NOTES
For special applications that require high temperatures , K22 can be produced in FKM material.

PERMISSIBLE SEALING GAP
   NBR Smax (mm)
t=(D-d)/2(mm) 50 Bar 100 Bar 150 Bar
t≤5 0.40 0.20 0.10
t>5  0.45 0.25 0.15
   PU Smax (mm)
t=(D-d)/2(mm) 150 Bar 250 Bar 400 Bar
t≤5 0.30 0.20 0.15
t>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 quite important to use the S value lower than the above indicated numbers.
More Information
Application หรือ MEDIA ที่เหมาะกับการใช้งานใช้งานConstruction machinery , fork-lift trucks , injection mouldingmachines , agricultural machinery , loading platforms and standardcylinders.
Temperature Range Min °C-30
Temperature Range Max °C105
Max Pressure150 bar
หน่วยPCE
หน่วยวัดmm
แบรนด์Kastas
TypeK22
วัสดุ(Material)NBR, PU
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K22 U-RING

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K22 U-RING

Hydraulic Rod Sealing Elements / K22

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