The O-Ring, cataloged under National Stock Number 5331-00-186-1272, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Woodward, Inc. Div Fuel Systems and Controls. Government technical data includes 3 specifications, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-186-1272 |
| Primary Part Number | 182568 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Woodward, Inc. Div Fuel Systems and Controls |
| Status | ACTIVE |
| Cross-Sectional Height | 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN |
| Center Hole Diameter | 0.482 INCHES MINIMUM AND 0.492 INCHES MAXIMUM IN |
| Material | RUBBER SYNTHETIC |
| 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 |
|---|---|
| RB12122-112 | Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec (USA) |
| 182568 PRIMARY | Woodward, Inc. Div Fuel Systems and Controls (USA) |
| Reference | Meaning |
|---|---|
| 2-112L308-80 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
| RB12122 | D/9 Drawing number reference only Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec |
| 182568 | 5/2 Secondary reference U.S. Government activity |
| 2-112 L308-80 | 5/9 Secondary reference Parker Hannifin Gmbh O-Ring Division |
NSN 5331-00-186-1272 is a O-Ring, manufactured by Woodward, Inc. Div Fuel Systems and Controls, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-186-1272 has 2 manufacturer part numbers on file: RB12122-112 (Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec), 182568 (Woodward, Inc. Div Fuel Systems and Controls).
1 possible match (shared part number, not a government interchangeability claim): 5331-00-759-1687. Verify interchangeability with system specifications before substitution.
Key specifications for 182568: Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN; Center Hole Diameter: 0.482 INCHES MINIMUM AND 0.492 INCHES MAXIMUM IN; Material: RUBBER SYNTHETIC. 3 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.