The O-Ring, cataloged under National Stock Number 5331-01-533-1185, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-533-1185 |
| Primary Part Number | 818548-123 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| Cross-Sectional Height | 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN |
| Hardness Rating | 75.0 SHORE DUROMETER A NOMINAL |
| Material Document and Classification | MIL-R-83248/1 MIL SPEC SINGLE MATERIAL RESPONSE |
| Color | BROWN |
| Center Hole Diameter | 1.162 INCHES MINIMUM AND 1.186 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 818548-123 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
| 818548-123 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems (USA) |
| 818548-123 | Northrop Grumman Systems Corporation (USA) |
| 818548-123 | Northrop Grumman Technical Services, Inc. (USA) |
| 818548-123 | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 14153 RE015331185 | 5/9 Secondary reference Dbr Industries, Inc. Dba Dbr Industries Inc |
| AS3209-106 | 5/9 Secondary reference Dbr Industries, Inc. Dba Dbr Industries Inc |
NSN 5331-01-533-1185 is a O-Ring, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-533-1185 has 5 manufacturer part numbers on file: 818548-123 (Hamilton Sundstrand Corporation Dba Collins Aerospace), 818548-123 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems), 818548-123 (Northrop Grumman Systems Corporation), 818548-123 (Northrop Grumman Technical Services, Inc.), 818548-123 (Northrop Grumman Systems Corporation).
Key specifications for 818548-123: Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN; Hardness Rating: 75.0 SHORE DUROMETER A NOMINAL; Material Document and Classification: MIL-R-83248/1 MIL SPEC SINGLE MATERIAL RESPONSE; Color: BROWN. 6 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.