The O-Ring, cataloged under National Stock Number 5331-01-587-4031, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Aqua-Chem, Inc. Dba Aqua-Chem Inc. Government technical data includes 3 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-587-4031 |
| Primary Part Number | 853-09984-000 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Aqua-Chem, Inc. Dba Aqua-Chem Inc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.139 INCHES NOMINAL IN |
| Center Hole Diameter | 1.734 INCHES NOMINAL IN |
| Material | RUBBER ETHYLENE-PROPYLENE-DIENE CLASS EPDM |
| 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 |
|---|---|
| 853-09984-000 PRIMARY | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| 277-D-9860 ITEM 12 | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
NSN 5331-01-587-4031 is a O-Ring, manufactured by Aqua-Chem, Inc. Dba Aqua-Chem Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-587-4031 has 2 manufacturer part numbers on file: 853-09984-000 (Aqua-Chem, Inc. Dba Aqua-Chem Inc), 277-D-9860 ITEM 12 (Aqua-Chem, Inc. Dba Aqua-Chem Inc).
Key specifications for 853-09984-000: Cross-Sectional Height: 0.139 INCHES NOMINAL IN; Center Hole Diameter: 1.734 INCHES NOMINAL IN; End Item Identification: 36K RO MODULE OFIFICE ASSEMBLY; Material: RUBBER ETHYLENE-PROPYLENE-DIENE CLASS EPDM. 3 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.