The O-Ring, cataloged under National Stock Number 5331-01-421-9886, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Kockum Products. The record lists 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Kockum Sonics Aktiebolag (CAGE A198N); Kockum Products (CAGE 03FY9) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-421-9886 |
| Primary Part Number | 3769-0018 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Kockum Products |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 37690018 | Kockum Sonics Aktiebolag (SWE) |
| 3769-0018 PRIMARY | Kockum Products (USA) |
| Reference | Meaning |
|---|---|
| 37690018 | 5/9 Secondary reference Kockum Sonics Ab |
| 3769-0018 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5331-01-421-9886 is a O-Ring, manufactured by Kockum Products, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-421-9886 has 2 manufacturer part numbers on file: 37690018 (Kockum Sonics Aktiebolag), 3769-0018 (Kockum Products).
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.