The O-Ring, cataloged under National Stock Number 5331-00-297-9956, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Fairbanks Morse, Llc. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5331-00-297-9956 |
| Primary Part Number | 31N606PC45 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Fairbanks Morse, Llc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.250 INCHES NOMINAL IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OR RUBBER POLYESTER URETHANE CLASS AU OR RUBBER POLYETHER URETHANE CLASS EU |
| 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 |
|---|---|
| 31N606PC45 PRIMARY | Fairbanks Morse, Llc (USA) |
| Reference | Meaning |
|---|---|
| 31N606PC45 | 3/9 Design control — primary reference Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco |
NSN 5331-00-297-9956 is a O-Ring, manufactured by Fairbanks Morse, Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-297-9956 has 1 manufacturer part number on file: 31N606PC45 (Fairbanks Morse, Llc).
Key specifications for 31N606PC45: Cross-Sectional Height: 0.250 INCHES NOMINAL IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OR RUBBER POLYESTER URETHANE CLASS AU OR RUBBER POLYETHER URETHANE CLASS EU. 2 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.