K19

K19 - Heavy Duty Piston Seal
   KASTAŞ NO D (H8) d (h9) B(-0/+0,2) r n
 K19 050-036 50 36 9 0,3 6,5
 K19 055-041 55 41 9 0,3 6,5
 K19 060-046 60 46 9 0,3 6,5
 K19 060-050 60 50 8 0,3 5
 K19 063-048 63 48 11 0,5 7,5
 K19 065-050 65 50 11 0,5 7,5
 K19 070-055 70 55 11 0,5 7,5
 K19 075-060 75 60 11 0,5 7,5
 K19 080-065 80 65 11 0,5 7,5
 K19 085-070 85 70 11 0,5 7,5
 K19 090-075 90 75 11 0,5 7,5
 K19 095-080 95 80 11 0,5 7,5
 K19 100-085 100 85 12,5 0,5 7,5
 K19 105-090 105 90 12,5 0,5 7,5
 K19 105-090/1 105 90 13,5 0,5 7,5
 K19 105-090/2 105 90 14 0,5 7,5
 K19 110-095 110 95 12,5 0,5 7,5
 K19 115-100 115 100 12,5 0,5 7,5
 K19 120-105 120 105 12,5 0,6 7,5
 K19 125-102 125 102 16 0,6 11,5
 K19 130-107 130 107 16 0,6 11,5
 K19 135-112 135 112 16 0,6 11,5
 K19 140-117 140 117 16 0,6 11,5
 K19 145-122 145 122 16 0,6 11,5
 K19 150-127 150 127 16 0,6 11,5
 K19 150-130 150 130 18 0,6 10,5
 K19 150-135 150 135 12,5 0,6 7,5
 K19 155-132 155 132 16 0.6 11.5
 K19 160-137 160 137 16 0,6 11,5
 K19 160-141,5 160 141.5 19 0.6 10.5
 K19 160-145 160 145 12,5 0,6 7,5
 K19 165-142 165 142 15,5 0,6 11,5
 K19 165-145 165 145 17 0,6 10,5
 K19 170-147 170 147 16 0,6 11,5
 K19 170-155 170 155 16 0,6 7,5
 K19 180-157 180 157 16 0,6 11,5
 K19 180-160 180 160 18 0,6 10,5
 K19 200-177 200 177 16 0,6 11,5
 K19 290-270 290 270 16 0,6 10,5

K19 is a four piece double acting heavy duty compact seal which consists of one PTFE bronze profile ring , one elastomeric nitrile rubber pre-load sealing element and two thermoplastic back-up rings.

PRODUCT ADVANTAGES
• High sliding speed
• Low friction , free of stick-slip
• Simple groove design
• Long service life
• Very good sealing performance even with pressure peaks
• High resistance to abrasion
• Increased clearance possible

APPLICATION
Mining equipment , construction machinery and earth moving equipment.
MATERIAL   CODE
NBR 80 SHORE A NB8001
PTFE   PT 6003
POM   PM 9901
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 ≤1.5 m/sn ≤1.5 m/sn ≤1.5 m/sn
Note: The above data are maximum values and cannot be used at the same time.

   

SURFACE ROUGHNESS Ra Rmax
Sliding Surface ØD ≤0.2 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
The elastomeric ring should be assembled into the one-piece piston firstly , and then special mixture PTFE should be assembled with a special assembly tool (See section; Hydraulic Sealing Elements General Installation Information) , lastly the split guide rings should be installed. The required REPLACEion chamfers on the piston and cylinder bore should be de-burred and rounded. 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 being manufactured with FKM pre-load component , pure PTFE back-up rings and special mixture PTFE profile ring. Due to the design , K19 can be used up to shock pressures of 600 bar safely. The permissible sealing gap values of K19 heavy duty piston seal is given in the below table.
PERMISSIBLE SEALING GAP
Pressure (Bar)  Smax (mm)
P≤350 0.45
350 0.25