Caterpillar Part reference
Catalog entry 0306141 is listed as a ring-backup in the Caterpillar catalog. The occurrences recorded here associate it with boom cylinder group entries for the Caterpillar 430D in the hydraulic system; these are catalog associations only and their recorded conditions should be confirmed before use.
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 |
|---|---|
| 0306141 | ring-backup (current part) |
| 15***44 | seal as |
| 15***47 | ring-wear |
| 16***07 | seal as-buffer |
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 backup ring is a support ring used alongside a primary seal in a hydraulic or pneumatic sealing arrangement. Its purpose is to limit extrusion of the seal material into the clearance gap under pressure, helping the seal keep its shape.
Use part number 0306141 as the reference for this entry. Before ordering, check the recorded catalog occurrences against your machine's serial number, configuration and the cylinder assembly you are servicing, because the catalog association does not establish compatibility for every machine configuration.
Catalog references
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