The O-Ring, cataloged under National Stock Number 5331-00-352-0333, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is C. E. Conover & Co., Inc.. Government technical data includes 4 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-352-0333 |
| Primary Part Number | 2-235C557-70 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | C. E. Conover & Co., Inc. |
| Status | ACTIVE |
| Temp Rating | -40.0 FAHRENHEIT AND 212.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Center Hole Diameter | 3.094 INCHES MINIMUM AND 3.124 INCHES MAXIMUM IN |
| Material | RUBBER CHLOROPRENE CLASS CR |
| 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 |
|---|---|
| 2-235C557-70 PRIMARY | C. E. Conover & Co., Inc. (USA) |
| N141002410 | Wass Srl (ITA) |
| Reference | Meaning |
|---|---|
| A3568-235 | 5/9 Secondary reference U.S. Government activity |
| A3568-235 | 3/1 Design control — primary reference Sae International Dba Sae International |
| 2-235C557-7 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5331-00-352-0333 is a O-Ring, manufactured by C. E. Conover & Co., Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-352-0333 has 2 manufacturer part numbers on file: 2-235C557-70 (C. E. Conover & Co., Inc.), N141002410 (Wass Srl).
Key specifications for 2-235C557-70: Temp Rating: -40.0 FAHRENHEIT AND 212.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Center Hole Diameter: 3.094 INCHES MINIMUM AND 3.124 INCHES MAXIMUM IN; Material: RUBBER CHLOROPRENE CLASS CR. 4 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.