The Seal Assembly,shaft,spring Loade, cataloged under National Stock Number 4320-01-255-4758, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is John Crane, Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-255-4758 |
| Primary Part Number | M39672 |
| Item Name | Seal Assembly,shaft,spring Loade |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | John Crane, Inc |
| Status | ACTIVE |
| General Characteristics Item Description | CONSISTS OF SPRING HOLDER; SPRING; ELASTOMER BELLOWS; DRIVING BAND; DRIVING NOTCH; DISC; RETAINER; PRIMARY SEALING RING; MATING RING AND O-RING |
| 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 |
|---|---|
| M39672 PRIMARY | John Crane, Inc (USA) |
| NSP-00306 PRIMARY | John Crane, Inc (USA) |
| PL999D0718 PC 21 AND 22 | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| NSP00306XF911O151(316) | John Crane, Inc (USA) |
| Reference | Meaning |
|---|---|
| NSP00306XF9110151(316) | 5/9 Secondary reference Defense Maritime Solutions, Inc. |
| CFSP77524-1TY1S | C/1 Advisory reference — outside the item-of-supply concept John Crane, Inc |
| NSP-00306 | 5/9 Secondary reference Defense Maritime Solutions, Inc. |
| CFSP77524-1-TY1SZ1-1-8IN-BP2C1 | 5/9 Secondary reference John Crane, Inc |
NSN 4320-01-255-4758 is a Seal Assembly,shaft,spring Loade, manufactured by John Crane, Inc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-255-4758 has 4 manufacturer part numbers on file: M39672 (John Crane, Inc), NSP-00306 (John Crane, Inc), PL999D0718 PC 21 AND 22 (Circor Naval Solutions Llc Dba Warren Pumps), NSP00306XF911O151(316) (John Crane, Inc).
Key specifications for M39672: General Characteristics Item Description: CONSISTS OF SPRING HOLDER; SPRING; ELASTOMER BELLOWS; DRIVING BAND; DRIVING NOTCH; DISC; RETAINER; PRIMARY SEALING RING; MATING RING AND O-RING. 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.