The O-Ring, cataloged under National Stock Number 5331-01-288-9398, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Haywardindl. Products, Inc.. Government technical data includes 1 specification, 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 | 5331-01-288-9398 |
| Primary Part Number | ST2500042 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Haywardindl. Products, Inc. |
| 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 |
|---|---|
| ST052100BF60C PIECE 10 | Haywardindl. Products, Inc. (USA) |
| ST2500042 PRIMARY | Haywardindl. Products, Inc. (USA) |
NSN 5331-01-288-9398 is a O-Ring, manufactured by Haywardindl. Products, Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-288-9398 has 2 manufacturer part numbers on file: ST052100BF60C PIECE 10 (Haywardindl. Products, Inc.), ST2500042 (Haywardindl. Products, Inc.).
Key specifications for ST2500042: 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.