The O-Ring, cataloged under National Stock Number 5331-00-385-7902, 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-385-7902 |
| Primary Part Number | 853-08309-002 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Aqua-Chem, Inc. Dba Aqua-Chem Inc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN |
| Center Hole Diameter | 18.410 INCHES MINIMUM AND 18.500 INCHES MAXIMUM IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| 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 |
|---|---|
| 853-08309-002 PRIMARY | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| 853-08309-000 | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| Reference | Meaning |
|---|---|
| 853-8309-002 | C/1 Advisory reference — outside the item-of-supply concept Aqua-Chem, Inc. |
| 853-8309 | 5/9 Secondary reference Aqua-Chem, Inc. |
| 700-7839PC6 | 5/9 Secondary reference Aqua-Chem, Inc. |
| 853-08309-002 | 3/9 Design control — primary reference Aqua-Chem, Inc. |
| 853-08309-000 | 5/9 Secondary reference Aqua-Chem, Inc. |
NSN 5331-00-385-7902 is a O-Ring, manufactured by Aqua-Chem, Inc. Dba Aqua-Chem Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-385-7902 has 2 manufacturer part numbers on file: 853-08309-002 (Aqua-Chem, Inc. Dba Aqua-Chem Inc), 853-08309-000 (Aqua-Chem, Inc. Dba Aqua-Chem Inc).
Key specifications for 853-08309-002: Cross-Sectional Height: 0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN; Center Hole Diameter: 18.410 INCHES MINIMUM AND 18.500 INCHES MAXIMUM IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR. 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.