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K518

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  • Hydraulic Piston Sealing Elements
  • K518
K518 - Compact Piston Seal
  • General Features
  • Technicial Specifications
   KASTAŞ NOD(H8)d(h9)B(+0,2)ds(h8)d1(±0,1)s(+0,2)n
 K518 025-016251613,522242,14
 K518 032-022322216,428,530,56,354
 K518 035-025352516,431,433,56,354
 K518 040-030403016,435,438,56,354
 K518 040-030/1403012,5373944
 K518 040-032403215,53639,43,24
 K518 040-032/1403210373944
 K518 044,4-028,5744,4528,5719,0539,8543,126,355
 K518 045-029452918,440,443,56,355
 K518 045-035453516,440,443,56,354
 K518 050,8-34,9250,834,9219,0546,2249,486,355
 K518 050-034503420,546493,15
 K518 050-034/1503418,445,4148,666,355
 K518 050-038503820,54649,44,24
 K518 055-039553920,551543,15
 K518 055-039/1553918,450,3753,656,355
 K518 055-045554512,5525444
 K518 060,32-44,4560,3244,4519,0555,7258,986,355
 K518 060-044604420,256593,15
 K518 060-044/1604418,455,3958,656,355
 K518 060-048604820,55659,44,24
 K518 063-047634720,559623,15
 K518 063-047/1634718,458,3961,636,355
 K518 063-051635120,55962,44,24
 K518 065-049654920,561643,15
 K518 065-050655018,460,4163,646,355
 K518 066,67-50,8066,6750,819,0562,0965,276,355
 K518 070-050705022,464,1868,346,356
 K518 070-054705420,566693,15
 K518 075-055755522,469,273,36,356
 K518 075-059755920,571743,15
 K518 080-060806022,474,1578,36,356
 K518 080-062806222,576793,65
 K518 080-066806622,47679,45,25
 K518 085-065856522,479,1583,36,356
 K518 090-070907022,484,1588,36,356
 K518 090-076907622,48689,45,25
 K518 095-075957522,489,1593,316,356
 K518 100-0751007522,493,13986,356
 K518 100-0861008622,49699,45,25
 K518 110-0851108522,4103,11086,356
 K518 110-0961109622,4106109,45,25
 K518 115-0901159022,4108,1113,026,356
 K518 115-10111510122,4111114,45,25
 K518 120-0951209522,4113,11186,356
 K518 120-10612010622,4116119,45,25
 K518 125-10012510025,4118,11236,356
 K518 130-10513010525,4123,11286,356
 K518 130-105/113010525,4123,11289,526
 K518 135-11013511025,4127,6132,59,526
 K518 140-115/114011525,4132,6137,59,526
 K518 140-115/214011525,41331386,356
 K518 140-11814011826,51361395,16
 K518 150-12515012525,4142,6147,59,56
 K518 150-12815012826,51461495,16
 K518 160-13016013025,4153157,56,357
 K518 160-13516013525,4152,6157,59,526
 K518 160-14316014326,5156159,47,25
 K518 165-14316514326,5161163,55,254
 K518 170-14817014826,51661695,16
 K518 180-15018015035,4172,94177,876,357
 K518 180-15518015525,4171,72177,112,76
 K518 180-15818015826,51761795,16
 K518 180-16318016326,5176179,47,25
 K518 190-16519016525,4181,72187,0512,76
 K518 200-17520017531,51961996,66
 K518 200-175/120017525,4191,6219712,76
 K518 200-18020018031,5196199,49,26
 K518 210-18521018525,4201,6220712,76
 K518 220-20022020031,5216219,49,26
 K518 250-22525022525,4241,6224712,76
 K518 250-23025023031,5246249,49,26

K518 is a five piece double acting compact seal which consists of one elastomeric nitrile rubber sealing element , two polyester elastomer back-up rings on both sides to prevent extrusion into the sealing gap and two special profiled guide rings produced from thermoplastic to absorb transverse forces.

PRODUCT ADVANTAGES
•Superior radial load bearing capacity
•Economic sealing and guiding solution
•Simple groove design , one-piece piston possible
•Long service life
•Simple snap installation

APPLICATION
Mobile hydraulics , back-hoe loaders , fork-lift trucks , agricultural machinery , standard cylinders.
MATERIAL CODE
NBR 80 SHORE A NB8001
POM   PM9905
TPE   TP7301
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 ≤400 Bar ≤400 Bar ≤400 Bar
SPEED ≤0.5 m/sec ≤0.5 m/sec ≤0.5 m/sec
Note: The above data are maximum values and cannot be used at the same time.
    
 
SURDACE ROUGHNESS Ra Rmax
Sliding Surface ØD ≤0.4 μm ≤4.0μm
Groove Base Ød ≤1.6 μm ≤6.3μm
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 because the back-up rings and guide rings are produced in split forms. 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
For special applications that require high temperatures , piston seal is manufactured in FKM and PTFE material.

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