K701

K701 - Spring Loaded Rod Seal
   KASTAŞ NO d (f8) D (H9) B (-0/+0,2) amin. n
 K701-007 7,00 9,9 2,4 0,4 1,8
 K701-012 12 16,5 3,6 0,6 2,8
 K701-018 18,00 24,2 4,8 0,7 3,8
 K701-020 20,00 26,2 4,8 0,7 3,8
 K701-025 25 31,2 4,8 0,7 3,8
 K701-030 30,00 36,2 4,8 0,7 3,8
 K701-035 35,00 41,2 4,8 0,7 3,8
 K701-040 40,00 49,4 7,1 0,8 5,6
 K701-045 45 54,4 7,1 0,8 5,6
 K701-050 50,00 59,4 7,1 0,8 5,6
 K701-055 55 64,4 7,1 0,8 5,6
 K701-060 60,00 69,4 7,1 0,8 5,6
 K701-065 65 74,4 7,1 0,8 5,6
 K701-070 70,00 79,4 7,1 0,8 5,6
 K701-075 75 84,4 7,1 0,8 5,6
 K701-080 80,00 89,4 7,1 0,8 5,6
 K701-085 85 94,4 7,1 0,8 5,6
 K701-090 90,00 99,4 7,1 0,8 5,6
 K701-095 95 104,4 7,1 0,8 5,6
 K701-100 100,00 109,4 7,1 0,8 5,6
 K701-110 110,00 119,4 7,1 0,8 5,6
 K701-115 115 124,4 7,1 0,8 5,6
 K701-120 120,00 132,2 9,5 0,8 7,6

K701 is a two piece single acting rod seal which consists of a PTFE u-ring with metal spring as a tension component.

PRODUCT ADVANTAGES
• Superior static and dynamic sealing eect by the metal spring
• High resistance to chemicals and temperature changes
• Low friction , free of stick-slip
• High sliding speed
• Long service life
• Good dry running conditions
• Can be sterilized
• Low static and dynamic friction values

APPLICATION
Hydraulic and pneumatic cylinders , hot water valves , pumps , hot steam vanes , food processing , chemical and medical technology.
MATERIAL   CODE
PTFE PT6002
STAINLESS STEEL SPRING CN9902
OPERATING CONDITIONS
MEDIA Hydraulic oils , hot air , water , steam , all media that do not react PTFE and stainless steel
TEMPERATURE -150°C +250°C
PRESSURE ≤350 Bar
SPEED ≤15.0 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. If the operating media is gas we recommend having Ra value not to be above 0.15 μm.
 

INSTALLATION
K701 is to be assembly into open and closed grooves. 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
Depending on the PTFE material application values and their resistance can change. The permissible sealing gap values of K701 spring loaded rod seal is given in the below table.
 
PERMISSIBLE SEALING GAP
   B(mm) Smax (mm)
  50 Bar 150 Bar 250 Bar 350 Bar
2.4-3.6 0.10 0.075 0.05 0.05
4.8  0.20 0.10 0.075 0.06
7.1 0.25 0.15 0.10 0.075
9.5  0.30 0.15 0.13 0.075
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.