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K31

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  • K31
K31 - Heavy Duty Rod Seal
  • General Features
  • Technicial Specifications
   KASTAŞ NOd (f8)D(H11)B(-0/+0,2)bn
 K31-025 PU25358,37,34
 K31-030 PU304011104
 K31-030/130408,37,34
 K31-031 PU31,7538,17,356,353
 K31-031/131,7541,287,356,355
 K31-035 PU355010,59,55
 K31-038 PU38,147,637,356,355
 K31-040 PU405510,59,55
 K31-040/1 PU40508,37,34
 K31-040/2 PU405512,411,45
 K31-044 PU44,4557,1510,529,524,5
 K31-045 PU456012,411,45
 K31-050 PU506512,411,45
 K31-050/1 PU50,860,3210,529,524
 K31-050/2 PU50,863,510,529,524,5
 K31-050/3 PU50608,37,34
 K31-055 PU557012,411,45
 K31-055/1 PU556814134,5
 K31-057 PU57,1569,8510,529,524,5
 K31-060 PU607512,411,45
 K31-060/1 PU607314134,5
 K31-060/260729.58.64.5
 K31-063 PU63,576,210,529,524,5
 K31-063/163759,68,64,5
 K31-065 PU657811104,5
 K31-065/1 PU65801095
 K31-069 PU69,8582,5510,529,524,5
 K31-070 PU708512,411,45
 K31-070/1 PU708311104,5
 K31-070/2 PU70851095
 K31-070/3 PU708013124
 K31-070/4 PU708511105
 K31-070/570829.58.64.5
 K31-075 PU758811104,5
 K31-075/1 PU75901095
 K31-076 PU76,292,0713,712,75,5
 K31-076/2 PU76,288,910,529,524,5
 K31-080 PU809512,411,45
 K31-080/1 PU809311104,5
 K31-080/2 PU80951095
 K31-082 PU82,5595,2510,529,524,5
 K31-085 PU8510011105
 K31-085/1 PU8510516156
 K31-085/285979.58.64.5
 K31-088 PU88,9101,610,529,524,5
 K31-088/1 PU88,9104,7713,712,75,5
 K31-090 PU9010512,411,45
 K31-090/1 PU9010511105
 K31-090/2 PU9011018176
 K31-090/3 PU9011015,514,56
 K31-090/4 PU9010013124
 K31-090/59010516.5155
 K31-095 PU9511011105
 K31-095/1 PU9511516156
 K31-100 PU10012015,514,56
 K31-100/1 PU10011511105
 K31-100/210012015.5146
 K31-100/410011516155
 K31-101 PU101,6114,315,2814,284,5
 K31-101/1PU101,6117,4715,2714,275,5
 K31-105 PU10512013125
 K31-105/11051251614.56
 K31-105/210512015.514.55
 K31-107107,95120,6514,613,64,5
 K31-110 PU11013013126
 K31-110/1 PU11012513125
 K31-110/2 PU11013015,514,56
 K31-114 PU114,312715,2814,284,5
 K31-114/1 PU114,3133,3516,8715,876
 K31-115 PU11513515,514,56
 K31-115/111513016.5155
 K31-120 PU12014013126
 K31-125 PU12514515,514,56
 K31-127 PU127146,0516,8715,876
 K31-130 PU13015015,514,56
 K31-139 PU139,7152,415,2814,284,5
 K31-140 PU14016015,514,56
 K31-150 PU15016015,514,54
 K31-150/1 PU15017015,514,56
 K31-152 PU15217116,915,876
 K31-16016017515,514,55
 K31-18018020519,218,27
 K31-180/118019515,514,55
 K31-18518520519,518,56
 K31-22022024520197
 K31-23023025016.5156
 K31-24024026016.5156
 K31-29029031521197
 K31-34034036521197

K31 is a three piece single acting sealing set which consist of one elastomeric main sealing element with additional sealing lip , one special prole elastomer nitrile rubber that goes into the main sealing component and one thermoplastic back-up ring. 

PRODUCT ADVANTAGES

• Able to work in high pressures
• Superior sealing effect in low pressures
• Easy assembly into closed grooves
• Superior sealing effect with the secondary lip
• Secondary sealing lip provides extra protection against the ingress of dirt particles.
•High wear resistance
•Improved sealing gap due to the active back-up ring

APPLICATION
Mining equipment , iron and steel industry , metal injection machines , scrap cutters , marine hydraulics , cranes and mobile hydraulics.

MATERIAL   CODE
NBR 70 SHORE A NB7001
PU 94 SHORE A PU9401
POM   PM9901
OPERATING CONDITIONS
MEDIA Mineral oils(DIN 51524)  HFA ve HFB HFC
TEMPERATURE -30°C +100°C +5°C +50°C -30°C +40°C
PRESSURE ≤630 Bar ≤630 Bar ≤630 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 sealing element must be oiled with system oil.

NOTES
K31 can be used in all type of cylinders safely due to the reason of perfect adaptation to the pressure changes.

MINUMUM DIAMETER VALUES FOR CLOSED TYPE OF GROOVES
(D-d)/2 (mm) ≤7.5 10 12.5 15
dmin (mm) 50 80 100 105
PERMISSIBLE SEALING GAP
 Pressure (Bar)     Smax (mm)                 
150 1.0
250 0.8
400 0.6
630 0.4
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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