The O-Ring, cataloged under National Stock Number 5331-01-108-3781, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Honeywell International, Inc Div Aerospace-Tucson. Government technical data includes 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-108-3781 |
| Primary Part Number | 1531758-54 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Honeywell International, Inc Div Aerospace-Tucson |
| Status | ACTIVE |
| Cross-Sectional Height | 0.050 INCHES NOMINAL IN |
| Elongation Percentage | 125 MAXIMUM |
| Material | RUBBER SYNTHETIC |
| 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 |
|---|---|
| 153175854 | Parker Hannifin Corporation Div O-Ring Division (USA) |
| 1531758-54 PRIMARY | Honeywell International, Inc Div Aerospace-Tucson (USA) |
| 153175854 | Parco, Llc (USA) |
| Reference | Meaning |
|---|---|
| 1531758-54 | 3/9 Design control — primary reference U.S. Government activity |
| 153175854 | 5/9 Secondary reference Hutchinson Seal Corporation |
NSN 5331-01-108-3781 is a O-Ring, manufactured by Honeywell International, Inc Div Aerospace-Tucson, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-108-3781 has 3 manufacturer part numbers on file: 153175854 (Parker Hannifin Corporation Div O-Ring Division), 1531758-54 (Honeywell International, Inc Div Aerospace-Tucson), 153175854 (Parco, Llc).
Key specifications for 1531758-54: Cross-Sectional Height: 0.050 INCHES NOMINAL IN; Elongation Percentage: 125 MAXIMUM; Material: RUBBER SYNTHETIC. 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.