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ASTON KDA PISTON SEAL

    KDA PISTON SEAL
    KDA type piston seal it is mainly used in the presence of elevated pressures and the anti-extrusion ring allows high coupling clearances and high structural deformations without the danger of extrusion. Asymmetrical lips are designed for differentiate behavior on surfaces static and dynamic: the static one guarantees a large contact surface; that dynamic is shorter and stiffer to focus the load against the dynamic surface. They can also be mounted opposite as a double-acting sealing system.
     
    Features
    • Not affected by structural deformations
    • Long service life
    • Simple execution of the seat
    • Excellent wear resistance
    • Good temperature resistance
    • Easy to install
    • Exceptional resistance to extrusion (backup ring)
    MATERIAL
    1TypeDesignationHardness
    PolyurethaneSEALPUR 9494°ShA
    2TypeDesignation
    Acetal resinBEARITE
    FIELD OF APPLICATION
    PressureSpeedTemperature
    ≤ 500 bar≤ 0.5 m/s-40°C÷ +110°C
    SURFACE ROUGHNESS
    Dynamic surfaceRa ≤ 0.3 umRt ≤ 2.5 um
    Static surfaceRa ≤ 1.6 umRt ≤ 6.3 um