CAT INCH SPG
The Caterpillar-specific 2-piece piston seal is a bi-directional piston seal for use in medium to heavy duty hydraulic applications and is suitable for sealing against hardened surfaces in pneumatic applications. This seal is a two piece design comprised of rectangular or square rubber square ring energizing a rectangular shaped PTFE cap.
This profile offers excellent stability, long wear, low friction and extrusion protection. The seal is commonly used in applications such as agriculture hydraulics, mobile hydraulics, machine tools and hydraulic presses.
Most commonly used on Caterpillar equipment and in Caterpillar kits.
Material Type (Primary Seal): 15% GLASS/5% MOS2-FILLED PTFE
Material Type (Energizer): 70A NITRILE
Durometer (Shore D): 67
Temperature Range (F): -40 TO 212
Max Pressure (psi) WITH WEAR RINGS: 3000
Max Pressure (psi) WITHOUT WEAR RINGS: 5000
Extrusion Gap WITH WEAR RINGS at Various Pressures (in):
• 1,000 PSI: 0.026
Extrusion Gap WITHOUT WEAR RINGS at Various Pressures (in):
• 1,000 PSI 0.015
• 3,000 PSI 0.010
• 5,000 PSI 0.006
Max Speed (ft/sec): 12.0
Mating Surface Roughness – Ra (µin) – DYNAMIC: 2<>12
Mating Surface Roughness – Ra (µin) – STATIC: 63 MAX
Part Number Definition (Inch): CTC-(CAT PART NUMBER)