The O-Ring, cataloged under National Stock Number 5331-01-085-8390, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Pti Technologies Inc.. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-085-8390 |
| Primary Part Number | 76902-31-028 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Pti Technologies Inc. |
| Status | ACTIVE |
| Cross-Sectional Height | 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN |
| Center Hole Diameter | 1.358 INCHES MINIMUM AND 1.370 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 76902-31-028 PRIMARY | Pti Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| 76902-31-028 | 5/9 Secondary reference Vacco Industries |
| 76902-31-028 | 3/9 Design control — primary reference Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator |
NSN 5331-01-085-8390 is a O-Ring, manufactured by Pti Technologies Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-085-8390 has 1 manufacturer part number on file: 76902-31-028 (Pti Technologies Inc.).
Key specifications for 76902-31-028: Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN; Center Hole Diameter: 1.358 INCHES MINIMUM AND 1.370 INCHES MAXIMUM IN. 2 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.