The O-Ring, cataloged under National Stock Number 5331-00-940-8424, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Solventum Purification Inc. Div Filtration and Separation Division. Government technical data includes 6 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5331-00-940-8424 |
| Primary Part Number | 51166-ITEM 35 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Solventum Purification Inc. Div Filtration and Separation Division |
| Status | ACTIVE |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Hardness Rating | 70.0 SHORE DUROMETER A NOMINAL |
| Criticality Code Justification | ZZZY |
| Center Hole Diameter | 4.219 INCHES MINIMUM AND 4.249 INCHES MAXIMUM IN |
| Material | RUBBER SYNTHETIC |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 51166-ITEM 35 | Solventum Purification Inc. Div Filtration and Separation Division (USA) |
| Reference | Meaning |
|---|---|
| 29178-22 | 3/1 Design control — primary reference Solventum Purification Inc. Div Filtration and Separation Division |
| 29178-22CP | 5/9 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 29178-22 | 5/9 Secondary reference U.S. Government activity |
NSN 5331-00-940-8424 is a O-Ring, manufactured by Solventum Purification Inc. Div Filtration and Separation Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-940-8424 has 1 manufacturer part number on file: 51166-ITEM 35 (Solventum Purification Inc. Div Filtration and Separation Division).
1 possible match (shared part number, not a government interchangeability claim): 5330-01-279-3365. Verify interchangeability with system specifications before substitution.
Key specifications for 51166-ITEM 35: Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Hardness Rating: 70.0 SHORE DUROMETER A NOMINAL; Criticality Code Justification: ZZZY; Center Hole Diameter: 4.219 INCHES MINIMUM AND 4.249 INCHES MAXIMUM IN. 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.