The O-Ring, cataloged under National Stock Number 5331-01-359-1500, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Haltec Corp. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-359-1500 |
| Primary Part Number | OR-220-TG-A |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Haltec Corp |
| Status | ACTIVE |
| Cross-Sectional Height | 0.240 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN |
| Hardness Rating | 55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM |
| Material Document and Classification | PB-16270,CAGEC 63900 MFR REF SINGLE MATERIAL RESPONSE |
| Center Hole Diameter | 18.084 INCHES MINIMUM AND 18.396 INCHES MAXIMUM IN |
| Material | RUBBER POLYISOPRENE SYNTHETIC CLASS IR |
| 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 |
|---|---|
| 1874640 | Oshkosh Defense Llc (USA) |
| OR-220-TG-A PRIMARY | Haltec Corp (USA) |
| Reference | Meaning |
|---|---|
| 1874640 | 7/9 Vendor item drawing reference Oshkosh Corp |
NSN 5331-01-359-1500 is a O-Ring, manufactured by Haltec Corp, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-359-1500 has 2 manufacturer part numbers on file: 1874640 (Oshkosh Defense Llc), OR-220-TG-A (Haltec Corp).
Key specifications for OR-220-TG-A: Cross-Sectional Height: 0.240 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN; Hardness Rating: 55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM; Material Document and Classification: PB-16270,CAGEC 63900 MFR REF SINGLE MATERIAL RESPONSE; Center Hole Diameter: 18.084 INCHES MINIMUM AND 18.396 INCHES MAXIMUM IN. 5 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.