The Gasket, cataloged under National Stock Number 5330-01-556-0391, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-556-0391 |
| Primary Part Number | 563-8181003 FN AY-2-30 |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Style Designator | NON-CIRCULAR |
| Material Document and Classification | MIL-R-2765 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Aperture Diameter | 2.500 INCHES NOMINAL IN |
| Elongation Percentage | 300 MAXIMUM |
| Bolt Hole Quantity | 4 |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL |
| Hole Diameter | 0.173 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| 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 |
|---|---|
| 563-8181003 FN AY-2-30 | Naval Sea Systems Command (USA) |
| 8181003 FN AY-1-30 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 54-90-5214A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5330-01-556-0391 is a Gasket, manufactured by Naval Sea Systems Command, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-556-0391 has 2 manufacturer part numbers on file: 563-8181003 FN AY-2-30 (Naval Sea Systems Command), 8181003 FN AY-1-30 (Naval Sea Systems Command).
Key specifications for 563-8181003 FN AY-2-30: Style Designator: NON-CIRCULAR; Material Document and Classification: MIL-R-2765 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Overall Length: 2.750 INCHES NOMINAL IN; Overall Width: 2.750 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.