The O-Ring, cataloged under National Stock Number 5331-01-125-1243, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5331-01-125-1243 |
| Primary Part Number | GS570J2K212 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Center Hole Diameter | 0.849 INCHES MINIMUM AND 0.869 INCHES MAXIMUM IN |
| Material | RUBBER CHLOROPRENE CLASS CR |
| 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 |
|---|---|
| GS570J2K212 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| 212-1111 | Federal-Mogul Corp Government Sales Dept (USA) |
| Reference | Meaning |
|---|---|
| 212-N11 | C/1 Advisory reference — outside the item-of-supply concept Hutchinson Seal Corporation |
| A-212SR569-70 | 5/2 Secondary reference U.S. Government activity |
| 212 2336 | 5/9 Secondary reference Coseley Buildings Ltd |
NSN 5331-01-125-1243 is a O-Ring, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-125-1243 has 2 manufacturer part numbers on file: GS570J2K212 (Northrop Grumman Systems Corporation), 212-1111 (Federal-Mogul Corp Government Sales Dept).
Key specifications for GS570J2K212: Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Center Hole Diameter: 0.849 INCHES MINIMUM AND 0.869 INCHES MAXIMUM IN; Material: RUBBER CHLOROPRENE CLASS CR. 3 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.