The O-Ring, cataloged under National Stock Number 5331-01-676-4633, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Insitu, Inc.. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-676-4633 |
| Primary Part Number | 001-001791-000 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Insitu, Inc. |
| Status | ACTIVE |
| Center Hole Diameter | 0.644 INCHES NOMINAL IN |
| Material | RUBBER FLUOROCARBON CLASS FPM |
| 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 |
|---|---|
| 001-001791-000 PRIMARY | Insitu, Inc. (USA) |
| V1163 3-908 PRIMARY | Parker Hannifin Corp Stratoflex Aerospace/military Connector Div (USA) |
| V1163 3-908 | Parker-Hannifin Corp Div O-Ring Division (USA) |
NSN 5331-01-676-4633 is a O-Ring, manufactured by Insitu, Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-676-4633 has 3 manufacturer part numbers on file: 001-001791-000 (Insitu, Inc.), V1163 3-908 (Parker Hannifin Corp Stratoflex Aerospace/military Connector Div), V1163 3-908 (Parker-Hannifin Corp Div O-Ring Division).
Key specifications for 001-001791-000: Special Features: O-RING WIDTH IS 0.087 INCHES IN; Center Hole Diameter: 0.644 INCHES NOMINAL IN; Material: RUBBER FLUOROCARBON CLASS FPM. 2 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.