Caterpillar Part reference
Part 0304606 is listed in the Caterpillar catalog as a seal, noted for use as required. Its catalog occurrences appear within relief valve group assemblies in the hydraulic system of Caterpillar 735 and 740 listings, but these associations do not confirm fitment for every machine or configuration.
Recorded applications
Selected catalog references that list this part. A catalog association does not confirm fitment for every machine or configuration.
Catalog context
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| Part number | Description |
|---|---|
| 0304606 | seal (use as required) (current part) |
| 12***99 | valve group-relief; -hoist control |
| 12***04 | plug |
| 12***12 | body |
Selected entries from this catalog unit. Other part numbers are masked. Confirm the full breakdown and your machine configuration before ordering.
View model pageGeneral guidance
In general, a seal is a component used to prevent leakage of fluid or pressure at a joint or between mating surfaces. Catalog notes such as "use as required" mean the item is used only when a specific service task calls for it, and the exact service context should be confirmed in the catalog.
Use the existing part number 0304606 when identifying this listing. Before ordering, check the catalog occurrence conditions for the Caterpillar 735 and 740 relief valve group entries, including any recorded serial number or parent assembly details, to confirm they match your machine.
Catalog references
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