The O-Ring, cataloged under National Stock Number 5331-01-541-3816, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Comsaco, Llc Dba Comsaco Inc. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-541-3816 |
| Primary Part Number | 40459 ITEM 22 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Comsaco, Llc Dba Comsaco Inc |
| Status | ACTIVE |
| Criticality Code Justification | ZZZW |
| Departure From Cited Document | MATERIAL WILL BE IN ACCORDANCE WITH NAVICP ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 40459 ITEM 22 | Comsaco, Llc Dba Comsaco Inc (USA) |
| 40458 ITEM 17 | Comsaco, Llc Dba Comsaco Inc (USA) |
| Reference | Meaning |
|---|---|
| AS568A-012 | 4/1 Identification reference U.S. Government activity |
NSN 5331-01-541-3816 is a O-Ring, manufactured by Comsaco, Llc Dba Comsaco Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-541-3816 has 2 manufacturer part numbers on file: 40459 ITEM 22 (Comsaco, Llc Dba Comsaco Inc), 40458 ITEM 17 (Comsaco, Llc Dba Comsaco Inc).
1 possible match (shared part number, not a government interchangeability claim): 5331-01-581-2986. Verify interchangeability with system specifications before substitution.
Key specifications for 40459 ITEM 22: Criticality Code Justification: ZZZW; Departure From Cited Document: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS. 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.