The Seal,plain, cataloged under National Stock Number 5330-01-546-6490, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Defense Maritime Solutions, Inc.. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-546-6490 |
| Primary Part Number | H74181-01-4 |
| Item Name | Seal,plain |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Defense Maritime Solutions, Inc. |
| Status | ACTIVE |
| FSC Application Data | RUDDER SEAL, PORT |
| Material Document and Classification | NEOPRENE MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Material | RUBBER CHLOROPRENE CLASS CR OVERALL |
| Construction | SPLIT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| H74181-01-4 PRIMARY | Defense Maritime Solutions, Inc. (USA) |
| H74181-01-4-1 | Defense Maritime Solutions, Inc. (USA) |
| Reference | Meaning |
|---|---|
| US74181-01 | D/9 Drawing number reference only Defense Maritime Solutions, Inc. |
NSN 5330-01-546-6490 is a Seal,plain, manufactured by Defense Maritime Solutions, Inc., classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-546-6490 has 2 manufacturer part numbers on file: H74181-01-4 (Defense Maritime Solutions, Inc.), H74181-01-4-1 (Defense Maritime Solutions, Inc.).
Key specifications for H74181-01-4: FSC Application Data: RUDDER SEAL, PORT; Material Document and Classification: NEOPRENE MFR REF SINGLE MATERIAL RESPONSE OVERALL; Part Name Assigned by Controlling Agency: BODY (SPLIT); BODY ASSEMBLY; End Item Identification: LPD 15 USS PONCE. 4 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.