The O-Ring, cataloged under National Stock Number 5331-01-257-7728, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Textron Systems Corporation Dba Textron Systems Corp. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-257-7728 |
| Primary Part Number | 5330-006-0013 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Textron Systems Corporation Dba Textron Systems Corp |
| Status | ACTIVE |
| Cross-Sectional Height | 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN |
| Outside Diameter | 1.487 INCHES MINIMUM AND 1.523 INCHES MAXIMUM IN |
| Center Hole Diameter | 1.287 INCHES MINIMUM AND 1.311 INCHES MAXIMUM IN |
| Material | RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR |
| 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 |
|---|---|
| 5330-006-0013 PRIMARY | Textron Systems Corporation Dba Textron Systems Corp (USA) |
| Reference | Meaning |
|---|---|
| 2-125-B612-70 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
NSN 5331-01-257-7728 is a O-Ring, manufactured by Textron Systems Corporation Dba Textron Systems Corp, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-257-7728 has 1 manufacturer part number on file: 5330-006-0013 (Textron Systems Corporation Dba Textron Systems Corp).
Key specifications for 5330-006-0013: Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN; Outside Diameter: 1.487 INCHES MINIMUM AND 1.523 INCHES MAXIMUM IN; Center Hole Diameter: 1.287 INCHES MINIMUM AND 1.311 INCHES MAXIMUM IN; Material: RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR. 4 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.