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K40

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  • K40
K40 - Piston Seal
  • General Features
  • Technicial Specifications
   KASTAŞ NOD (H8)d (h11)B (-0/+0,2)d1 min.n
 K40-014 PU1486102
 K40-036 PU36276323
 K40-040 PU402511354
 K40-045 PU453011404
 K40-045/1 PU45309,5404
 K40-050 PU503511454
 K40-050/1 PU50359,5454
 K40-055 PU554011504
 K40-055/1 PU55409,5504
 K40-060 PU604511554
 K40-060/1 PU60459,5554
 K40-063 PU634810584
 K40-063/1 PU635010604
 K40-063/2 PU63489,5584
 K40-065 PU655011604
 K40-070 PU705013645
 K40-070/2 PU705510654
 K40-070/3 PU705016,5645
 K40-075 PU755513695
 K40-080 PU806013745
 K40-080/1 PU806012,5745
 K40-085 PU85709,3795
 K40-090 PU907013845
 K40-100 PU1008013945
 K40-100/1 PU100888,5964
 K40-110 PU11090131045
 K40-120 PU120100131146,5
 K40-125 PU12510016,21196,5
 K40-140 PU140115151346,5
 K40-140/1 PU14012012,51346,5
 K40-150 PU150120191448
 K40-170 PU17015012,51646,5
 K40-180 PU180150191748
 K40-220 PU220190172128
 K40-240 PU240210172328

K40 is a two piece single acting piston seal which consists of asymmetrical profile with pressure relieving grooves and a thermoplastic back-up ring.

PRODUCT ADVANTAGES
• Superior static and dynamic sealing effect
• Improved sealing gap due to the active back-up ring
• Relief grooves against dynamic pressure
• Easy assembly into the closed groove
• Simple groove design
• Highly wear resistant

APPLICATION
Heavy duty cylinders , scrap cutters and hydraulic jacks.

MATERIAL   CODE
PU 92 SHORE A PU9401
POM   PM9901
OPERATING CONDITIONS
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 one piece piston. It is very important that the assembly tools must be of soft material and have no sharp edges. Before installation all individual parts of the seal must be oiled with system oil.

NOTESThe permissible sealing gap values of K40 piston seal is given in the below table.


PERMISSIBLE SEALING GAP
   Pressure (Bar) Smax (mm)
100 1.0
150 0.8
250 0.7
400 0.6
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.  
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