The O-Ring, cataloged under National Stock Number 5331-01-438-1125, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil (CAGE 38450) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-438-1125 |
| Primary Part Number | 90-000-017 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil |
| 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 |
|---|---|
| 90-000-017 PRIMARY | Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil (USA) |
| PL9001A-00-CR1 FIND NO. 4 | Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil (USA) |
NSN 5331-01-438-1125 is a O-Ring, manufactured by Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-438-1125 has 2 manufacturer part numbers on file: 90-000-017 (Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil), PL9001A-00-CR1 FIND NO. 4 (Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil).
1 possible match (shared part number, not a government interchangeability claim): 6610-01-481-2644. Verify interchangeability with system specifications before substitution.
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.