The O-Ring, cataloged under National Stock Number 5331-01-435-4953, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Emerson Process Management SAS. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5331-01-435-4953 |
| Primary Part Number | 03031-0232-0001 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Emerson Process Management SAS |
| Status | ACTIVE |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| 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 |
|---|---|
| 03031-0232-0001 | Emerson Process Management SAS (FRA) |
| 03031-0232-0001 | Rosemount Inc. (USA) |
| Reference | Meaning |
|---|---|
| 03031-0232-0001 | 3/9 Design control — primary reference Rosemount Measurement Inc |
| 3031-0232-0001 | 5/9 Secondary reference Rosemount Measurement Inc |
NSN 5331-01-435-4953 is a O-Ring, manufactured by Emerson Process Management SAS, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-435-4953 has 2 manufacturer part numbers on file: 03031-0232-0001 (Emerson Process Management SAS), 03031-0232-0001 (Rosemount Inc.).
Key specifications for 03031-0232-0001: Part Name Assigned by Controlling Agency: ELECTRONICS COVER, BUNA-N; End Item Identification: DIFFERENTIAL PRESSURE TRANSMITTER; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR. 1 specification is 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.