The O-Ring, cataloged under National Stock Number 5331-01-273-2227, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Brunswick Corp Us Marine Div. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Brunswick Corp Us Marine Div (CAGE 65254) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-273-2227 |
| Primary Part Number | 25-F40278 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Brunswick Corp Us Marine Div |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 25-F40278 PRIMARY | Brunswick Corp Us Marine Div (USA) |
| Reference | Meaning |
|---|---|
| 40278 | 5/9 Secondary reference Brunswick Corp Us Marine Div |
NSN 5331-01-273-2227 is a O-Ring, manufactured by Brunswick Corp Us Marine Div, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-273-2227 has 1 manufacturer part number on file: 25-F40278 (Brunswick Corp Us Marine Div).
3 possible matches (shared part number, not a government interchangeability claim): 3460-01-274-7709, 5330-01-492-3599, 5977-01-708-6665. Verify interchangeability with system specifications before substitution.
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.