The Seal,spacer,rear, cataloged under National Stock Number 4320-01-157-4451, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-157-4451 |
| Primary Part Number | 990706 |
| Item Name | Seal,spacer,rear |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| 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 |
|---|---|
| NC-760 PIECE 17 | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA) |
| 990706 PRIMARY | Naval Inventory Control Point Mechanicsburg (USA) |
NSN 4320-01-157-4451 is a Seal,spacer,rear, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-157-4451 has 2 manufacturer part numbers on file: NC-760 PIECE 17 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer), 990706 (Naval Inventory Control Point Mechanicsburg).
1 possible match (shared part number, not a government interchangeability claim): 6210-01-470-7352. Verify interchangeability with system specifications before substitution.
Key specifications for 990706: End Item Identification: CTFGL PMP 400GPM 30PSI 3535RPM RPM. 0 specifications are 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.