The Seal,plain, cataloged under National Stock Number 5330-01-305-2598, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics Div Engineered Polymer Systems. Government technical data includes 7 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-305-2598 |
| Primary Part Number | AR3781-8979 (SPLIT SEAL) |
| Item Name | Seal,plain |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Engineered Polymer Systems |
| Status | ACTIVE |
| Seal Width | 1.000 INCHES NOMINAL IN |
| Housing Bore Diameter | 39.750 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | SINGLE LIP |
| Accommodated Shaft Diameter | 37.812 INCHES NOMINAL IN |
| Material | RUBBER HEEL |
| Material | STEEL CORROSION RESISTING RETAINER |
| 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 |
|---|---|
| 4050246 | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| AR3781-8979 (SPLIT SEAL) PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Engineered Polymer Systems (USA) |
| Reference | Meaning |
|---|---|
| 2836669 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| AR3781-8979 | 5/9 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Engineered Polymer Systems |
| 8979 RUP H1/L5 | 5/9 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Engineered Polymer Systems |
NSN 5330-01-305-2598 is a Seal,plain, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Engineered Polymer Systems, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-305-2598 has 2 manufacturer part numbers on file: 4050246 (Lockheed Martin Corporation Div Rms - Mitchel Field), AR3781-8979 (SPLIT SEAL) (Parker-Hannifin Corporation Dba Pneutronics Div Engineered Polymer Systems).
Key specifications for AR3781-8979 (SPLIT SEAL): Seal Width: 1.000 INCHES NOMINAL IN; Housing Bore Diameter: 39.750 INCHES NOMINAL IN; Cross-Sectional Shape Style: SINGLE LIP; Accommodated Shaft Diameter: 37.812 INCHES NOMINAL IN. 7 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.