Caterpillar uses proprietary seal designs and materials. These include:
Buffer Seals: To protect the primary piston seals from high-pressure spikes and contaminants.
Wiper Seals: To prevent external dirt, mud, and moisture from entering the cylinder system.
Bearing Bands: Low-friction bands that guide the piston and rod, preventing metal-to-metal contact and ensuring smooth, even operation.
This 570-1992 boom cylinder is used for 374D 374F 365C excavator.
EXCAVATOR
374F 374F L






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