The O-Ring, cataloged under National Stock Number 5331-01-504-1540, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Smar International Corporation. Government technical data includes 1 specification, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-504-1540 |
| Primary Part Number | 203-0402 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Smar International Corporation |
| Status | ACTIVE |
| Material | RUBBER FLUOROCARBON CLASS FPM |
| 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 |
|---|---|
| 203-0402 PRIMARY | Smar International Corporation (USA) |
NSN 5331-01-504-1540 is a O-Ring, manufactured by Smar International Corporation, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-504-1540 has 1 manufacturer part number on file: 203-0402 (Smar International Corporation).
Key specifications for 203-0402: Special Features: SMAR LD301 OPERATION & MAINTENANCE MANUAL FOR DIFFERENTIAL, GAGE, ABSOLUTE & HIGH STATIC PRESSURE TRANSMITTER; FIG 5.1, ITEM 19; Part Name Assigned by Controlling Agency: FLANGE O-RING; Material: RUBBER FLUOROCARBON CLASS FPM. 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.