The O-Ring, cataloged under National Stock Number 5331-01-654-4126, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Critical Solutions International, Llc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Critical Solutions International, Llc (CAGE 1N5S7) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-654-4126 |
| Primary Part Number | FP3748 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Critical Solutions International, Llc |
| Status | ACTIVE |
| 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 |
|---|---|
| FP3748 PRIMARY | Critical Solutions International, Llc (USA) |
| Reference | Meaning |
|---|---|
| FP1162D | D/9 Drawing number reference only Critical Solutions International, Llc |
NSN 5331-01-654-4126 is a O-Ring, manufactured by Critical Solutions International, Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-654-4126 has 1 manufacturer part number on file: FP3748 (Critical Solutions International, Llc).
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.