K48

Piston Seal
Piston Seal
   KASTAŞ NO D(H10) d(h9) B(+0.2/-0.0) r n
 K48 100-82 100 82 22.5 0.4 10
 K48 100-85 100 85 13.5 0.2 8
 K48 110-095/1 110 95 12,5 0,2 8
 K48 110-95 110 95 16 0.2 8
 K48 120-105 120 105 16 0.2 8
 K48 125-110 125 110 15.8 0.2 8
 K48 130-105 130 105 30 0.8 13
 K48 135-120 135 120 16 0,2 8
 K48 140-123 140 123 16 0.4 10
 K48 140-125 140 125 16 0.2 8
 K48 160-145 160 145 16 0.2 8
 K48 170-150 170 150 16 0,2 12
 K48 180-160 180 160 16 0,2 12
 K48 186-166 186 166 16 0,2 12
 K48 200-180 200 180 20 0.4 14
 K48 220-195 220 195 25 0,8 14
 K48 250-225 250 225 25 0,8 14
 K48 63-50 63 50 14.5 0.2 8
 K48 80-66 80 66 17 0.2 8
 K48 90-75 90 75 13.5 0.2 8

K48 is a four piece double acting heavy duty piston seal which consists of one TPE profile ring , one elastomeric nitrile rubber to preload sealing element and two thermoplastic back-up rings.

PRODUCT ADVANTAGES
•Simple groove design
•Superior performance in high and variable pressure
•Long service life
•Very good sealing performance at shock pressures
•High resistance to abrasion
•Ultimate resistance in water based fluids.

APPLICATION
Mining industryHeavy duty applications
MATERIAL CODE
NBR 80 SHORE A NB8001
TPE   TP5501
POM   POM9901
OPERATING CONDITIONS
MEDIA Mineral oils(DIN 51524)  HFA and HFB
TEMPERATURE -30°C +105°C +5°C +60°C
PRESSURE ≤700 Bar ≤700 Bar
SPEED ≤0.3 m/sec ≤0.3 m/sec
Not: 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 μm
Groove Base Ød ≤1.6 μm ≤10 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
Easily assembled into one-piece piston because the back-up rings are been 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
It is recommended to choose suitable material and quantity for guiding element regarding the purpose  of application.
 PERMISSIBLE SEALING GAP    
  Pressure (Bar)  Smax (mm)
P≤350 0.45
350< P≤700 0.25

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.