The O-Ring Set, cataloged under National Stock Number 5331-01-657-5285, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Applied Research Associates, Inc.. Government technical data includes 4 specifications, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-657-5285 |
| Primary Part Number | MRAK-0218 |
| Item Name | O-Ring Set |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Applied Research Associates, Inc. |
| Status | ACTIVE |
| Component Quantity | 150 |
| Document Type | CATALOG SHEET |
| Component Document Origin | INDUSTRIAL |
| Document Source | 8R488 |
| 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 |
|---|---|
| MRAK-0218 PRIMARY | Applied Research Associates, Inc. (USA) |
NSN 5331-01-657-5285 is a O-Ring Set, manufactured by Applied Research Associates, Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-657-5285 has 1 manufacturer part number on file: MRAK-0218 (Applied Research Associates, Inc.).
Key specifications for MRAK-0218: Component Quantity: 150; Document Type: CATALOG SHEET; Component Document Origin: INDUSTRIAL; Document Source: 8R488. 4 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.