The O-Ring, cataloged under National Stock Number 5331-01-577-9549, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Greene Rubber Company, Inc.. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5331-01-577-9549 |
| Primary Part Number | H313523-4 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Greene Rubber Company, Inc. |
| Status | ACTIVE |
| Material Document and Classification | ASTM D 2000 MIBA407 ASSN STD SINGLE MATERIAL RESPONSE |
| Center Hole Diameter | 0.162 INCHES MINIMUM AND 0.212 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| H313523-4 PRIMARY | Greene Rubber Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| H313523 | D/9 Drawing number reference only Raytheon Company Div Corp |
NSN 5331-01-577-9549 is a O-Ring, manufactured by Greene Rubber Company, Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-577-9549 has 1 manufacturer part number on file: H313523-4 (Greene Rubber Company, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5331-01-686-6840. Verify interchangeability with system specifications before substitution.
Key specifications for H313523-4: Material Document and Classification: ASTM D 2000 MIBA407 ASSN STD SINGLE MATERIAL RESPONSE; Special Features: 40 DUROMETER EPDM EXTRUSION; INSIDE DIAMETER MAX 17.29 INCHES AND MIN 17.19 INCHES IN; Center Hole Diameter: 0.162 INCHES MINIMUM AND 0.212 INCHES MAXIMUM IN; Part Name Assigned by Controlling Agency: SEAL,O-RING. 2 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.