K41

K41 - Piston Seal
   KASTAŞ NO D (H8) d(h9) B(-0/+0,2) r n o rıng
 K41-012 12 7,1 2,2 0,6 4,5 6,75x1,78
 K41-018 18 10,7 3,2 0,6 4,5 9,92x2,62
 K41-022 22 14,7 3,2 0,6 4,5 13,95x2,62
 K41-025 25 17,7 3,2 0,6 4,5 17,13x2,62
 K41-030 30 19,3 4,2 1 6 18,66x3,53
 K41-030/1 30 22,7 3,2 0,6 4,5 21,89x2,62
 K41-032 32 21,3 4,2 1 6 20,22x3,53
 K41-040 40 29,3 4,2 1 6 28,17x3,53
 K41-045 45 34,3 4,2 1 6 32,92X3,53
 K41-050 50 39,3 4,2 1 6 37,69x3,53
 K41-050/1 50 34,9 6,3 1 6 34,29x5,33
 K41-055 55 44,3 4,2 1 6 44,04X3,53
 K41-060 60 44,9 6,3 1,3 8 43,82x5,33
 K41-060/1 60 49,3 4,2 1 6 49,21X3,53
 K41-063 63 47,9 6,3 1,3 8 46,99x5,33
 K41-065 65 49,9 6,3 1,3 8 46,99x5,33
 K41-070 70 59,3 4,2 1 6 56,74x3,53
 K41-070/1 70 54,9 6,3 1,3 8 53,34x5,33
 K41-075 75 59,9 6,3 1,3 8 56,52x5,33
 K41-080 80 64,9 6,3 1,3 8 62,87x5,33
 K41-085 85 69,9 6,3 1,3 8 69,22x5,33
 K41-090 90 74,9 6,3 1,3 8 72,39x5,33
 K41-090/1 90 69,5 8,1 1,3 8 68x6,99
 K41-095 95 79,9 6,3 1,3 8 78,74x5,33
 K41-100 100 84,9 6,3 1,3 8 81,92x5,33
 K41-110 110 94,9 6,3 1,3 8 91,44x5,33
 K41-115 115 99,9 6,3 1,3 8 97,79x5,33
 K41-120 120 104,9 6,3 1,3 8 104,14x5,3
 K41-125 125 109,9 6,3 1,3 8 107,32X5,3
 K41-130 130 109,5 8,1 1,8 10,25 108x7
 K41-130/1 130 114,9 6,3 1,3 8 113,67x5,3
 K41-140 140 124,9 6,3 1,3 8 123,8x5,33
 K41-150 150 134,9 6,3 1,3 8 133,35x5,3
 K41-160 160 144,9 6,3 1,3 8 142,24x5,3
 K41-160/1 160 139,5 8,1 1,8 10,25 135,89x6,9
 K41-170 170 154,9 6,3 1,3 8 151,77x5,3
 K41-180 180 164,9 6,3 1,3 8 164,47x5,3
 K41-180/1 180 159,5 8,1 1,8 10,25 158,12x6,9
 K41-190 190 174,9 6,3 1,3 8 170,82x5,3
 K41-200 200 179,5 8,1 1,8 10,25 177,17x6,9
 K41-210 210 189,5 8,1 1,8 10,25 183,52x6,9
 K41-215 215 194,5 8,1 1,8 10,25 193,70x6,9
 K41-220 220 199,5 8,1 1,8 10,25 196,22x6,9
 K41-225 225 204,5 8,1 1,8 10,25 202,57x6,9
 K41-230 230 209,5 8,1 1,8 10,25 202,57x6,9
 K41-240 240 219,5 8,1 1,8 10,25 215,27x6,9
 K41-250 250 229,5 8,1 1,8 10,25 227,97x6,9
 K41-260 260 236 8,1 1,8 12 227,97x6,9
 K41-270 270 246 8,1 1,8 12 240,67x6,9
 K41-280 280 256 8,1 1,8 12 253,37x6,9
 K41-290 290 266 8,1 1,8 12 259,70x6,9
 K41-300 300 276 8,1 1,8 12 266,07x6,9
 K41-320 320 296 8,1 1,8 12 291,47x6,9
 K41-340 340 316 8,1 1,8 12 316,87x6,9
 K41-350 350 326 8,1 1,8 12 316,87x6,9
 K41-370 370 346 8,1 1,8 12 342,27x6,9
 K41-380 380 356 8,1 1,8 10,25 354,9x6,99
 K41-400 400 376 8,1 1,8 10,25 367,67X6,9
 K41-450 450 426 8,1 1,8 10,25 417,96X6,9
 K41-460 460 436 8,1 1,8 12 430,66x6,9
 K41-480 480 456 8,1 1,8 10,25 456,06X6,9
 K41-500 500 476 8,1 1,8 12 468,76x6,9

K41 is a two piece single acting piston seal which consists of one special mixture PTFE prole ring and an o-ring as energizing element.

PRODUCT ADVANTAGES
• Low friction , free of stick-slip
• Simple groove design and low axial housing heights
• Long service life
• High sliding speed
• Wide range of temperature and chemicals depending on the o-ring material
• Minimum static and dynamic friction coefficient for a minimum energy loss and operating temperature
• Wide range of dimensions

APPLICATION
Injection moulding machines , fork-lift trucks , loading platforms , cranes , agricultural machinery and valves for hydraulic and pneumatic systems.
MATERIAL   CODE
NBR 70 SHORE A NB7001
PTFE   PT6003
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 ≤5.0 m/sn ≤5.0 m/sn ≤5.0 m/sn
Note: The above data are maximum values and cannot be used at the same time.

    

SURFACE ROUGHNESS Ra Rmax
Sliding Surface ØD ≤0.2 μm ≤2.0 μm
Groove Base Ød ≤1.6 μm ≤6.3 μm
Groove Flanks B ≤3.2 μm ≤15 μm
Note: It is recommended to have 50% to 90% of the working surface material contact area value.

 

INSTALLATION
We recommend using special assembly tool (See section; Hydraulic Sealing Elements General Installation Information) and to have open groove design for dimensions that are smaller than Ø 40 mm. 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.

NOTESIt is recommended to use with minimum two piston guide rings in long stroke cylinders , minimum one guide ring in short stroke and under low radial loads. For special applications that require high temperatures or resistance to chemicals , piston seal is being manufactured with special mixture PTFE and FKM material. The permissible sealing gap values of K41 piston seal is given in the below table.
 
PERMISSIBLE SEALING GAP
   B (mm) Smax (mm)
  150 Bar 250 Bar 400 Bar
3.2 0.4 0.25 0.15
4.2 0.4 0.25 0.20
6.3 0.5 0.30 0.20
8.1 0.6 0.35 0.25
9.5 0.7 0.50 0.30

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.