The Retainer,seal, cataloged under National Stock Number 5330-01-506-9725, 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 10 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 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 | 5330-01-506-9725 |
| Primary Part Number | 2531137 |
| Item Name | Retainer,seal |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Flange Thickness | 0.469 INCHES NOMINAL IN |
| Body Outside Diameter | 9.733 INCHES NOMINAL IN |
| Style Designator | FLANGED |
| Material Document and Classification | QQ-S-633 FED SPEC 1ST MATERIAL RESPONSE OVERALL |
| Seal Seat Diameter | 9.516 INCHES NOMINAL IN |
| Aperture Diameter | 9.125 INCHES NOMINAL IN |
| Mounting Flange Diameter | 13.500 INCHES NOMINAL IN |
| Material | STEEL COMP 1020 OVERALL |
| Seal Seat Depth | 0.188 INCHES NOMINAL IN |
| Construction | ONE-PIECE |
| 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 |
|---|---|
| 2531137 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5330-01-506-9725 is a Retainer,seal, manufactured by Naval Sea Systems Command, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-506-9725 has 1 manufacturer part number on file: 2531137 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 5330-01-593-1450. Verify interchangeability with system specifications before substitution.
Key specifications for 2531137: Overall Height: 0.938 INCHES NOMINAL IN; Flange Thickness: 0.469 INCHES NOMINAL IN; Body Outside Diameter: 9.733 INCHES NOMINAL IN; Style Designator: FLANGED. 10 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.