The Seal Assembly,shaft,spring Loade, cataloged under National Stock Number 4320-01-221-8771, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Defense Maritime Solutions, 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through both NSN and commercial part number lookups. 15 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4320-01-221-8771 |
| Primary Part Number | M396-47 |
| Item Name | Seal Assembly,shaft,spring Loade |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Defense Maritime Solutions, 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,O-RING; TEMPERATURE RANGE MINUS 40 DEG TO 400 DEG F; PRESSURE,750 PSI; 2.375 IN. SHAFT DIA 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 |
|---|---|
| CPS-2375-44C | Advanced Seal Technology Inc (USA) |
| 62677414 | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| NSP00307 XF91M015M | Defense Maritime Solutions, Inc. (USA) |
| M396-47 PRIMARY | Defense Maritime Solutions, Inc. (USA) |
| Reference | Meaning |
|---|---|
| CF-SP-65856TY1-SZ2.375-BP15MDM | 5/9 Secondary reference John Crane, Inc |
| CF-SP-65856TYI- | C/1 Advisory reference — outside the item-of-supply concept John Crane, Inc |
| CPS-2375-44 REV A | 5/9 Secondary reference Advanced Seal Technology Inc |
| CF-SP-65856TY1-SZ2.375XF91MO15M | 5/9 Secondary reference John Crane, Inc |
| PL-11828-F-18 PIECE 429 | 5/9 Secondary reference U.S. Government activity |
| 4320PL1287915 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| CPS-2375-44 REV B | 5/9 Secondary reference Advanced Seal Technology Inc |
| CFSP-65856,TY1-SZ2.375-XF15MO15M | 5/9 Secondary reference John Crane, Inc |
| CF-SP-65856 | C/1 Advisory reference — outside the item-of-supply concept John Crane, Inc |
| CF-SP-65856TY1-SZ2.375-XP15MDM | 5/9 Secondary reference John Crane, Inc |
| CPS-2375-4 | 5/9 Secondary reference Advanced Seal Technology Inc |
| CF-SP-65856TY1-SZ2.375-XP15M015M | 5/9 Secondary reference John Crane, Inc |
| NSP00307 XF91M015M | 5/9 Secondary reference Wartsila Lips Inc |
| 62677414 | 5/9 Secondary reference U.S. Government activity |
| M39647 | 5/9 Secondary reference John Crane, Inc |
NSN 4320-01-221-8771 is a Seal Assembly,shaft,spring Loade, manufactured by Defense Maritime Solutions, Inc., classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-221-8771 has 4 manufacturer part numbers on file: CPS-2375-44C (Advanced Seal Technology Inc), 62677414 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), NSP00307 XF91M015M (Defense Maritime Solutions, Inc.), M396-47 (Defense Maritime Solutions, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 4320-01-378-2766. Verify interchangeability with system specifications before substitution.
Key specifications for M396-47: General Characteristics Item Description: CONSISTS OF SPRING HOLDER,SPRING,ELASTOMER BELLOWS,DRIVING BAND,DRIVING NOTCH,DISC,RETAINER,PRIMARY SEALING RING,MATING RING,O-RING; TEMPERATURE RANGE MINUS 40 DEG TO 400 DEG F; PRESSURE,750 PSI; 2.375 IN. SHAFT DIA 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.