The O-Ring, cataloged under National Stock Number 5331-01-033-1203, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Lawler Manufacturing Company, Inc.. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-033-1203 |
| Primary Part Number | 71991PC9 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Lawler Manufacturing Company, Inc. |
| Status | ACTIVE |
| Cross-Sectional Height | 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN |
| Outside Diameter | 0.755 INCHES NOMINAL IN |
| Center Hole Diameter | 0.544 INCHES MINIMUM AND 0.554 INCHES MAXIMUM IN |
| Material | RUBBER SYNTHETIC |
| 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 |
|---|---|
| 71991PC9 | Lawler Manufacturing Company, Inc. (USA) |
| 2912-01 | Lawler Manufacturing Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| AS568-113IDS86865 | 3/9 Design control — primary reference Freudenberg-Nok General Partnership |
| 4113-59 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5331-01-033-1203 is a O-Ring, manufactured by Lawler Manufacturing Company, Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-033-1203 has 2 manufacturer part numbers on file: 71991PC9 (Lawler Manufacturing Company, Inc.), 2912-01 (Lawler Manufacturing Company, Inc.).
Key specifications for 71991PC9: Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN; Outside Diameter: 0.755 INCHES NOMINAL IN; Center Hole Diameter: 0.544 INCHES MINIMUM AND 0.554 INCHES MAXIMUM IN; Material: RUBBER SYNTHETIC. 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.