Caterpillar Part reference
The Caterpillar ring-back-up, catalog number 0306131, is listed in the catalog as an occurrence within the hydraulic system group, appearing in parent assemblies associated with the Caterpillar AP-1000 and AP-800C catalog models. The catalog association is recorded only as an occurrence; confirm the recorded conditions before ordering.
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 |
|---|---|
| 0306131 | ring-back-up (current part) |
| 1H***28 | seal 6.3 cm(2.484 in.) i.d.; seal--to seal pumps to case |
| 2K***37 | nut (national fine); (3/4-16-thd) |
| 4J***25 | ring-back-up |
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 ring-back-up is a supporting ring used alongside a seal in a hydraulic or mechanical sealing arrangement, helping the seal resist extrusion under pressure. Its exact construction, material and any supplied contents are not stated in this catalog entry, so they should be checked against the catalog.
Use part number 0306131 as the ordering reference for this target part. Before ordering, review the recorded catalog conditions for the associated parent assemblies, since those conditions are displayed separately on this page and may affect whether the listing matches your machine.
Catalog references
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