The O-Ring, cataloged under National Stock Number 5331-00-220-2518, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Sae International Dba Sae International. Government technical data includes 7 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through both NSN and commercial part number lookups. 12 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5331-00-220-2518 |
| Primary Part Number | MS9386-015 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Temp Rating | -85.0 FAHRENHEIT AND 500.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN |
| Outside Diameter | 0.691 INCHES NOMINAL IN |
| Hardness Rating | 75.0 SHORE DUROMETER A NOMINAL |
| Elongation Percentage | 125 MAXIMUM |
| Center Hole Diameter | 0.546 INCHES MINIMUM AND 0.556 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 | F |
| Part Number | Manufacturer |
|---|---|
| MS9386-015 PRIMARY | Sae International Dba Sae International (USA) |
| MS9386-015 | Leonardo Spa Helicopters Division - Production Site (ITA) |
| Reference | Meaning |
|---|---|
| AS9386-015 | 5/9 Secondary reference Blade Industrial Products Inc |
| MS9386-015 | 5/9 Secondary reference Blade Industrial Products Inc |
| 5P6620 | C/1 Advisory reference — outside the item-of-supply concept Caterpillar Inc Div Caterpillar Defense |
| S8990-15 | 5/9 Secondary reference U.S. Government activity |
| 9513-015-4 | 5/9 Secondary reference Rocker Solenoid Co Dba Rocker Solenoid Co |
| S8990-015 | 5/9 Secondary reference Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| 5331PL0653319 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| MS9386-015 | 5/9 Secondary reference U.S. Government activity |
| MS9386-015ES | 5/9 Secondary reference Eriks B.v. |
| 10163365 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| MS9386-015 | 5/9 Secondary reference U.S. Government activity |
| SAE-AS9386 | 3/1 Design control — primary reference Sae International Dba Sae International |
NSN 5331-00-220-2518 is a O-Ring, manufactured by Sae International Dba Sae International, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-220-2518 has 2 manufacturer part numbers on file: MS9386-015 (Sae International Dba Sae International), MS9386-015 (Leonardo Spa Helicopters Division - Production Site).
2 possible matches (shared part number, not a government interchangeability claim): 5331-01-029-0761, 5331-01-669-3846. Verify interchangeability with system specifications before substitution.
Key specifications for MS9386-015: Temp Rating: -85.0 FAHRENHEIT AND 500.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN; Outside Diameter: 0.691 INCHES NOMINAL IN; Hardness Rating: 75.0 SHORE DUROMETER A NOMINAL. 7 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.