What does 4206340 fit?
Kit 4206340 is a replacement boom cylinder seal kit for the Hitachi EX100-5 excavator. The OEM reference number is 4206340. Cross-reference numbers listed with it: 4187907.
Part number 4206340, for the Hitachi EX100-5, used in the boom cylinder. Also listed under 4187907. Materials: PU, Viton and NBR rubber.
What it does
The boom cylinder raises and lowers the boom, so its seals work against the weight of the whole front end. The compounds are polyurethane (PU), Viton and NBR. PU copes with pressure spikes, Viton with heat, and NBR is the usual oil-resistant rubber.
Please check: Please confirm your machine model, the part number of your cylinder or serial number first. These kits are specific to the application.
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