The O-Ring, cataloged under National Stock Number 5331-01-727-2821, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Manufacturer's Rubber & Supply Co, Inc. Div Manufacturer's Rubber & Supply. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Manufacturer's Rubber & Supply Co, Inc. Div Manufacturer's Rubber & Supply (CAGE 44965) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-727-2821 |
| Primary Part Number | 568A-116 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Manufacturer's Rubber & Supply Co, Inc. Div Manufacturer's Rubber & Supply |
| Status | ACTIVE |
| 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 |
|---|---|
| 568A-116 PRIMARY | Manufacturer's Rubber & Supply Co, Inc. Div Manufacturer's Rubber & Supply (USA) |
| Reference | Meaning |
|---|---|
| 19012E0141 | 7/2 Vendor item drawing reference Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service |
NSN 5331-01-727-2821 is a O-Ring, manufactured by Manufacturer's Rubber & Supply Co, Inc. Div Manufacturer's Rubber & Supply, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-727-2821 has 1 manufacturer part number on file: 568A-116 (Manufacturer's Rubber & Supply Co, Inc. Div Manufacturer's Rubber & Supply).
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.