The O-Ring, cataloged under National Stock Number 5331-01-428-8776, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Chris-Marine Aktiebolag. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Chris-Marine Aktiebolag (CAGE A104N) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-428-8776 |
| Primary Part Number | 133818 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Chris-Marine Aktiebolag |
| 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 |
|---|---|
| 133818 PRIMARY | Chris-Marine Aktiebolag (SWE) |
| PL133800 ITEM 18 | Chris-Marine Aktiebolag (SWE) |
| Reference | Meaning |
|---|---|
| 133818 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| PL133800 ITEM 18 | 5/9 Secondary reference Chris-Marine Ab |
| 133818 | 3/9 Design control — primary reference Chris-Marine Ab |
NSN 5331-01-428-8776 is a O-Ring, manufactured by Chris-Marine Aktiebolag, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-428-8776 has 2 manufacturer part numbers on file: 133818 (Chris-Marine Aktiebolag), PL133800 ITEM 18 (Chris-Marine Aktiebolag).
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.