The O-Ring, cataloged under National Stock Number 5331-00-420-8228, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Jonal Laboratories Inc. Government technical data includes 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5331-00-420-8228 |
| Primary Part Number | 590877 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Jonal Laboratories Inc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN |
| Center Hole Diameter | 3.474 INCHES MINIMUM AND 3.504 INCHES MAXIMUM 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 |
|---|---|
| 590877 PRIMARY | Jonal Laboratories Inc (USA) |
| Reference | Meaning |
|---|---|
| 590877 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| 590877 | 5/9 Secondary reference Richmond Lox Equipment Co Sub of Richmond Tank Car Co |
| 590877 | 5/9 Secondary reference Tokyo Judogi Kogyo Co. |
NSN 5331-00-420-8228 is a O-Ring, manufactured by Jonal Laboratories Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-420-8228 has 1 manufacturer part number on file: 590877 (Jonal Laboratories Inc).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-162-4121. Verify interchangeability with system specifications before substitution.
Key specifications for 590877: Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN; Center Hole Diameter: 3.474 INCHES MINIMUM AND 3.504 INCHES MAXIMUM IN; Material: RUBBER SILICONE CLASS Q. 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.