The O-Ring, cataloged under National Stock Number 5331-01-641-2644, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Trelleborg Sealing Solutions Us, Inc. Dba Trelleborg Sealing Solutions Us, Inc Div Logistics Center Americas. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-641-2644 |
| Primary Part Number | OR1900890-N7T30 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Trelleborg Sealing Solutions Us, Inc. Dba Trelleborg Sealing Solutions Us, Inc Div Logistics Center Americas |
| Status | ACTIVE |
| Cross-Sectional Height | 1.9 MILLIMETERS NOMINAL MM |
| Outside Diameter | 8.9 MILLIMETERS NOMINAL MM |
| Material | RUBBER |
| 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 |
|---|---|
| OR1900890-N7T30 PRIMARY | Trelleborg Sealing Solutions Us, Inc. Dba Trelleborg Sealing Solutions Us, Inc Div Logistics Center Americas (USA) |
| Reference | Meaning |
|---|---|
| OR1900890-N7 | 5/9 Secondary reference Trelleborg Sealing Solutions Us, Inc. Dba Trelleborg Sealing Solutions Us, Inc Div Logistics Center Americas |
NSN 5331-01-641-2644 is a O-Ring, manufactured by Trelleborg Sealing Solutions Us, Inc. Dba Trelleborg Sealing Solutions Us, Inc Div Logistics Center Americas, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-641-2644 has 1 manufacturer part number on file: OR1900890-N7T30 (Trelleborg Sealing Solutions Us, Inc. Dba Trelleborg Sealing Solutions Us, Inc Div Logistics Center Americas).
Key specifications for OR1900890-N7T30: Cross-Sectional Height: 1.9 MILLIMETERS NOMINAL MM; Outside Diameter: 8.9 MILLIMETERS NOMINAL MM; Special Features: MATERIAL NITRILE RUBBER; Material: RUBBER. 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.