1709850 Seal-Buffer Fits Caterpillar Models
1709850 Seal-Buffer Fits Caterpillar Models
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One New Aftermarket Replacement Seal-Buffer for Caterpillar (Cat) Excavators, Wheel Loaders, and Material Handlers
This aftermarket replacement buffer seal (Caterpillar part number 1709850) is a hydraulic cylinder sealing component used in the boom, stick, and bucket cylinders of Cat excavators and heavy equipment. Buffer seals are positioned in front of the primary rod seal to absorb pressure spikes and cushion shock loads, protecting the primary seals from premature wear and extending overall hydraulic cylinder service life.
Compatible Models
Caterpillar Excavators: 312D, 325B L, 325C FM, 325D FM, 325D FM LL, 330B L, 330C FM, 330D FM, 345B II, 345B L, 345C, 345C L, 365B, 365B II, 365C, 365C L, 365C L MH, 374D L, 385C, 385C FS, 568 FM LL, M325B, M325D L MH
Caterpillar Wheel Loaders: 988K
Caterpillar Track-Type Loaders / Other: 5080, 5090B
Replaces Part Number(s):
1709850
New aftermarket replacement part - not remanufactured, not used.



