The Seal,plain, cataloged under National Stock Number 5330-01-538-3741, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-538-3741 |
| Primary Part Number | 04521-001 |
| Item Name | Seal,plain |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba |
| Status | ACTIVE |
| Material | RUBBER BUTADIENE NITRILE OVERALL |
| 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 |
|---|---|
| 04521-001 PRIMARY | Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba (USA) |
| 04521-001 | Curtiss-Wright Arresting Systems SAS (FRA) |
| 04521-001 | Defence Liaison Services Pty Ltd (AUS) |
| Reference | Meaning |
|---|---|
| 5330PL1589794 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 04521-001 | 5/9 Secondary reference Safran Aerosystems |
NSN 5330-01-538-3741 is a Seal,plain, manufactured by Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-538-3741 has 3 manufacturer part numbers on file: 04521-001 (Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba), 04521-001 (Curtiss-Wright Arresting Systems SAS), 04521-001 (Defence Liaison Services Pty Ltd).
Key specifications for 04521-001: Special Features: 1/4 IN. THICKNESS IN; End Item Identification: MODEL 500S8 BRAKING BARRAGE; Material: RUBBER BUTADIENE NITRILE OVERALL. 1 specification is 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.