The Ring,seal Cage,split, cataloged under National Stock Number 4320-00-398-5458, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-398-5458 |
| Primary Part Number | H3180756 |
| Item Name | Ring,seal Cage,split |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| General Characteristics Item Description | BRONZE;2.594 IN. OD;1.812 IN. ID;0.750 IN. W;GROOVE 0.500 IN. W,0.219 IN. DEEP ON OUTER PERIPHERY;SPLIT AFTER FINISHING IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| H3180756 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 08-975-694-00-010 | 5/9 Secondary reference U.S. Government activity |
| 08-500-063-01PC31 | 5/9 Secondary reference Allis Chalmers Corp |
| 08-500-063-01PC31 | 5/9 Secondary reference U.S. Government activity |
NSN 4320-00-398-5458 is a Ring,seal Cage,split, manufactured by Naval Sea Systems Command, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-398-5458 has 1 manufacturer part number on file: H3180756 (Naval Sea Systems Command).
Key specifications for H3180756: General Characteristics Item Description: BRONZE;2.594 IN. OD;1.812 IN. ID;0.750 IN. W;GROOVE 0.500 IN. W,0.219 IN. DEEP ON OUTER PERIPHERY;SPLIT AFTER FINISHING IN. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.