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CAT INCH SPGA PISTON SEAL

     

    DESCRIPTION
    The Caterpillar-specific nylon step-cut 2-piece piston seal also known as the ChemCast seal, and is a bi-directional piston seal designed for heavy duty applications. This seal consists of a self lubricated, glass reinforced, heat
    stabilized, thermoplastic O.D. sealing ring that is energized by a flexible, oval shape, energizer.
    When installed in the bore, the precision step cut ring is aligned and compressed to provide drift free operation. The hard thermoplastic cap allows this profile to work effectively in substandard, rough-surfaced cylinders with much lower tolerances. This seal is an excellent choice for mobile equipment experiencing shock loads. This profile can pass over ports, resist cold flow and protect against metal-to-metal contact.

    SEAL INFORMATION
    Material Type (Primary Seal): GLASS-FILLED NYLON
    Material Type (Energizer): 80A NITRILE
    Rockwell Hardness (M) 77
    Rockwell Hardness ( R) 114
    Temperature Range (F): -30 TO 220
    Max Pressure (psi) WITHOUT WEAR RINGS: 7250
    Extrusion Gap at Various Pressures (in):
    7,250 PSI: 0.032
    Max Speed (ft/sec): 3.2
    Mating Surface Roughness – Ra (µin) – DYNAMIC: 3<>12
    Mating Surface Roughness – Ra (µin) – STATIC: 32 MAX
    Part Number Definition (Inch): CTC-(CAT PART NUMBER)

    ITEMPart number
    SPGA1665295
    SPGA9X7337
    SPGA4T8054
    SPGA9X7274
    SPGA8C9160
    SPGA8C9164
    SPGA4T5172
    SPGA9X7269
    SPGA4T8588
    SPGA8T1787
    SPGA9X7264
    SPGA8T0763
    SPGA1546744
    SPGA4T5173
    SPGA6E0465
    SPGA2462896
    SPGA4T4144
    SPGA8T1788
    SPGA4T8695
    SPGA8T1789
    SPGA8T1790
    SPGA8T1791
    SPGA8T1792
    SPGA8T1793
    SPGA9T0119
    SPGA4T4143
    SPGA8T1794
    SPGA8T1796
    SPGA8T1797
    SPGA1921453