The O-Ring, cataloged under National Stock Number 5331-00-922-8979, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Triumph Engine Control Systems Llc. 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 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 | 5331-00-922-8979 |
| Primary Part Number | 77283 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Triumph Engine Control Systems Llc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN |
| Center Hole Diameter | 1.479 INCHES MINIMUM AND 1.499 INCHES MAXIMUM IN |
| Material | RUBBER SYNTHETIC |
| 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 |
|---|---|
| 77283 PRIMARY | Triumph Engine Control Systems Llc (USA) |
NSN 5331-00-922-8979 is a O-Ring, manufactured by Triumph Engine Control Systems Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-922-8979 has 1 manufacturer part number on file: 77283 (Triumph Engine Control Systems Llc).
3 possible matches (shared part number, not a government interchangeability claim): 4710-01-100-3310, 5325-01-169-2485, 3510-01-173-6404. Verify interchangeability with system specifications before substitution.
Key specifications for 77283: Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN; Center Hole Diameter: 1.479 INCHES MINIMUM AND 1.499 INCHES MAXIMUM IN; Material: RUBBER SYNTHETIC. 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.