The O-Ring, cataloged under National Stock Number 5331-01-100-0638, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Hatz Diesel of America Inc. Government technical data includes 2 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-100-0638 |
| Primary Part Number | 40022800 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Hatz Diesel of America Inc |
| Status | ACTIVE |
| Cross-Sectional Height | 3.2 MILLIMETERS NOMINAL MM |
| Material | RUBBER SILICONE CLASS Q |
| 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 |
|---|---|
| 40022800 PRIMARY | Hatz Diesel of America Inc (USA) |
| Reference | Meaning |
|---|---|
| 69342 | C/1 Advisory reference — outside the item-of-supply concept Drs Environmental Systems Inc |
| 400 228 00 | C/1 Advisory reference — outside the item-of-supply concept Partz Network Llc, John J. Melton, Robert Melton, Christpher Robles, Richard Melton, Christine Hunsecker |
| 69342 | 5/9 Secondary reference Davey Compressor Co Div of Keco Industries Inc |
NSN 5331-01-100-0638 is a O-Ring, manufactured by Hatz Diesel of America Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-100-0638 has 1 manufacturer part number on file: 40022800 (Hatz Diesel of America Inc).
Key specifications for 40022800: Cross-Sectional Height: 3.2 MILLIMETERS NOMINAL MM; Material: RUBBER SILICONE CLASS Q. 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.