The O-Ring, cataloged under National Stock Number 5331-01-431-0505, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Apple Rubber Products, Inc. Dba Apple Rubber Products Inc. Government technical data includes 5 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-431-0505 |
| Primary Part Number | A3013096-8 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Apple Rubber Products, Inc. Dba Apple Rubber Products Inc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.056 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN |
| Hardness Rating | 60.0 SHORE DUROMETER A MINIMUM AND 70.0 SHORE DUROMETER A MAXIMUM |
| Material Document and Classification | ZZ-R-765, CLASS 2A, GRADE 60 OR 70 FED SPEC SINGLE MATERIAL RESPONSE A |
| Center Hole Diameter | 0.217 INCHES NOMINAL IN |
| Material | RUBBER SILICONE CLASS Q |
| 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 |
|---|---|
| A3013096-8 | Apple Rubber Products, Inc. Dba Apple Rubber Products Inc (USA) |
| A3013096-8 | Ashtabula Rubber Co (USA) |
| Reference | Meaning |
|---|---|
| A3013096-8 | 3/2 Design control — primary reference U.S. Government activity |
| 217X059 | 5/9 Secondary reference Ashtabula Rubber Co |
| 217X059 | 5/9 Secondary reference Quality Die Cutting Inc. Dba Quality Die Cutting Inc |
| 217X059 | 5/9 Secondary reference Vynacron Dental Co |
NSN 5331-01-431-0505 is a O-Ring, manufactured by Apple Rubber Products, Inc. Dba Apple Rubber Products Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-431-0505 has 2 manufacturer part numbers on file: A3013096-8 (Apple Rubber Products, Inc. Dba Apple Rubber Products Inc), A3013096-8 (Ashtabula Rubber Co).
1 possible match (shared part number, not a government interchangeability claim): 5331-01-464-2485. Verify interchangeability with system specifications before substitution.
Key specifications for A3013096-8: Cross-Sectional Height: 0.056 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN; Hardness Rating: 60.0 SHORE DUROMETER A MINIMUM AND 70.0 SHORE DUROMETER A MAXIMUM; Material Document and Classification: ZZ-R-765, CLASS 2A, GRADE 60 OR 70 FED SPEC SINGLE MATERIAL RESPONSE A; Center Hole Diameter: 0.217 INCHES NOMINAL IN. 5 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.