The O-Ring, cataloged under National Stock Number 5331-01-431-6744, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Dover Resources, Inc. Div Norriseal. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-431-6744 |
| Primary Part Number | 52561A446 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Dover Resources, Inc. Div Norriseal |
| Status | ACTIVE |
| 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 |
|---|---|
| 52561A446 PRIMARY | Dover Resources, Inc. Div Norriseal (USA) |
| Reference | Meaning |
|---|---|
| 980-0039 ITEM 7 | 5/2 Secondary reference U.S. Government activity |
| 1032446 | 5/2 Secondary reference U.S. Government activity |
| 52561A446 | 5/9 Secondary reference U.S. Government activity |
NSN 5331-01-431-6744 is a O-Ring, manufactured by Dover Resources, Inc. Div Norriseal, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-431-6744 has 1 manufacturer part number on file: 52561A446 (Dover Resources, Inc. Div Norriseal).
Key specifications for 52561A446: End Item Identification: W/S: STRATEGIC SEALIFT CONVERSION SHIPS CLASS; IMPECCABLE CLASS T-AGOS 23; POWHATAN CLASS T-ATF 166; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR. 1 specification is 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.