The O-Ring, cataloged under National Stock Number 5331-01-643-7240, 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.. Government technical data includes 5 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-643-7240 |
| Primary Part Number | ORAR00144-N7T40 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Trelleborg Sealing Solutions Us, Inc. |
| Status | ACTIVE |
| Temp Rating | -22.0 FAHRENHEIT AND 270.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.103 INCHES NOMINAL IN |
| Color | BLACK |
| Center Hole Diameter | 2.487 INCHES NOMINAL IN |
| Material | RUBBER BUTADIENE CLASS BR |
| 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 |
|---|---|
| ORAR00144-N7T40 PRIMARY | Trelleborg Sealing Solutions Us, Inc. (USA) |
NSN 5331-01-643-7240 is a O-Ring, manufactured by Trelleborg Sealing Solutions Us, Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-643-7240 has 1 manufacturer part number on file: ORAR00144-N7T40 (Trelleborg Sealing Solutions Us, Inc.).
Key specifications for ORAR00144-N7T40: Temp Rating: -22.0 FAHRENHEIT AND 270.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.103 INCHES NOMINAL IN; Color: BLACK; Center Hole Diameter: 2.487 INCHES NOMINAL 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.