The O-Ring, cataloged under National Stock Number 5331-00-543-2960, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Eaton Aerospace, Llc Dba Jackson South. Government technical data includes 4 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-543-2960 |
| Primary Part Number | B76807 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Eaton Aerospace, Llc Dba Jackson South |
| Status | ACTIVE |
| Cross-Sectional Height | 0.210 INCHES NOMINAL IN |
| Outside Diameter | 2.895 INCHES NOMINAL IN |
| Center Hole Diameter | 2.455 INCHES MINIMUM AND 2.495 INCHES MAXIMUM IN |
| Material | RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR |
| 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 |
|---|---|
| 76807 | Eaton Aerospace, Llc Dba Jackson South (USA) |
| B76807 PRIMARY | Eaton Aerospace, Llc Dba Jackson South (USA) |
| Reference | Meaning |
|---|---|
| AS568-333 | 5/9 Secondary reference U.S. Government activity |
| CR74448PC44 | 5/9 Secondary reference U.S. Government activity |
| AS568-333 | 3/1 Design control — primary reference Sae International Dba Sae International |
NSN 5331-00-543-2960 is a O-Ring, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-543-2960 has 2 manufacturer part numbers on file: 76807 (Eaton Aerospace, Llc Dba Jackson South), B76807 (Eaton Aerospace, Llc Dba Jackson South).
2 possible matches (shared part number, not a government interchangeability claim): 5305-00-685-2043, 5307-01-525-5670. Verify interchangeability with system specifications before substitution.
Key specifications for B76807: Cross-Sectional Height: 0.210 INCHES NOMINAL IN; Outside Diameter: 2.895 INCHES NOMINAL IN; Center Hole Diameter: 2.455 INCHES MINIMUM AND 2.495 INCHES MAXIMUM IN; Material: RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR. 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.