KDA

The piston seals type Aston Seals KDA is mainly used with high pressure and the backup ring o sets large gaps or structural deflections without extrusion.
The asymmetric lips are designed to differentiate the behaviour of the lips on the static and dynamic surfaces: the static lip is flexible, more sensitive to pressure fluctuations and it guaranties a wide contact area; the dynamic lip is shorter and stronger to concentrate load against the dynamic surface.
They can also be used in back-to-back arrangement for double acting piston.

  • Very high resistance against extrusion (backup ring)
  • Insensitive to structural deflections 
  • Extended service life
  • Simple groove design
  • Excellent wear-resistance
  • Good temperature resistance
  • Easy installation without expensive auxiliaries

KDA Seal Model

KDA 40 25 9 KDA 45 30 9 KDA 45 35 6 KDA 45 35 9 KDA 48 40 5.8 KDA 50 35 9 KDA 50 40 9 KDA 55 40 9 KDA 55 45 6 KDA 60 40 14 KDA 60 45 9 KDA 63 48 9 KDA 65 50 9 KDA 70 50 12 KDA 70 55 9 KDA 75 55 12 KDA 80 60 12 KDA 80 60 14 KDA 80 65 9 KDA 85 69.9 5.8 KDA 85 70 9 KDA 90 70 12 KDA 90 75 9 KDA 100 80 12 KDA 100 84.5 5.8 KDA 100 85 9 KDA 100 85 14 KDA 105 85 12 KDA 110 90 12 KDA 110 95 9 KDA 115 95 12 KDA 120 104.5 5.8 KDA 120 105 9 KDA 125 100 15 KDA 125 105 12 KDA 130 110 12 KDA 130 114.5 5.8 KDA 140 115 15 KDA 140 120 12 KDA 145 125 15 KDA 150 120 18.5 KDA 150 130 12 KDA 160 130 18.5 KDA 160 140 12 KDA 170 150 12 KDA 180 150 18.5 KDA 180 160 12 KDA 190 170 12 KDA 198 178 12.5 KDA 200 170 18.5 KDA 200 175 15 KDA 220 200 15 KDA 250 220 18.5 KDA 250 225 15


Hydraulic Systems and Components

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