K42

K42 - Compact Piston Seal
   KASTAŞ NO D (H11) d (h11) B (+0,2) ds( h8) d1(± 0,1) s(-0/+0,2) n
 K42 050-034 50 34 32 43,77 47,8 6,35 5
 K42 060-044 60 44 32 53,8 57,8 6,35 5
 K42 063-047 63 47 32 56,74 60,8 6,35 5
 K42 070-050 70 50 35 62,62 67,5 9,52 5
 K42 080-060 80 60 35 72,62 77,5 9,52 5
 K42 085-065 85 65 35 77,62 82,5 9,52 5
 K42 090-070 90 70 35 82,58 87,8 9,52 5
 K42 095-075 95 75 35 87,6 92,5 9,52 5
 K42 100-080 100 80 35 92,6 97,5 9,52 7
 K42 110-090 110 90 35 102,7 107,5 9,52 7
 K42 120-100 120 100 35 112,8 117,5 9,52 7
 K42 125-100 125 100 45 116,82 122,3 12,7 7
 K42 130-110 130 110 35 122,7 127,3 9,52 7
 K42 140-120 140 120 35 132,7 137,3 9,52 7
 K42 150-120 150 120 44 143.85 148 9.5 7
 K42 150-125 150 125 45 141,72 147,3 12,7 7
 K42 160-135 160 135 45 151,72 157,1 12,7 7
 K42 170-140 170 140 45 163 167,8 12,7 7
 K42 180-155 180 155 45 171,6 177,1 12,7 7
 K42 190-165 190 165 45 181,72 187,1 12,7 10
 K42 200-175 200 175 45 191,72 197,1 12,7 10
 K42 210-185 210 185 45 201.6 207.1 12.7 10
 K42 220-195 220 195 45 211,6 217,1 12,7 10
 K42 250-225 250 225 45 241,72 247,1 12,7 10
 K42 280-255 280 255 45 271,72 277,1 12,7 10
 K42 300-275 300 275 45 291,72 297,1 12,7 10
 K42 320-295 320 295 45 311,72 317,1 12,7 10
 K42 350-325 350 325 45 341,72 347,1 12,7 10

K42 is a five piece double acting compact seal which consists of one multiple lipped 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 thermoplastic guide rings to absorb transverse forces.

PRODUCT ADVANTAGES
• Effective sealing during vibration and shock loading
• Superior sealing efeect in high pressures
• Maximum sealing effciency with the least amount of friction
• Superior sealing performance

APPLICATION
Heavy duty cylinders , excavators , cranes , marine hydraulics and loading platforms.
MATERIAL   CODE
NBR 80 SHORE A NB8001
TPE   TP 5501
POM   PM 9903
OPERATING CONDITIONS
MEDIA Mineral oils (DIN 51524)  HFA ve HFB HFC
TEMPERATURE -30°C +105°C +5°C +60°C -30°C +60°C
PRESSURE ≤700Bar ≤700 Bar ≤700 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 ≤4.0 μm
Groove Base Ød ≤1.6 μm ≤6.3 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
K42 compact seal must be used in open housing due to the non split form of the back-up ring produced from TPE material. If it is necessary to have a closed groove , back-up rings should be cut with 45° angle in a way not to have any gap and installed afterwards. On this case after the assembly onto the piston the cut on the back-up ring should be checked carefully. 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.