The O-Ring, cataloged under National Stock Number 5331-00-008-7873, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Boeing Distribution Services X, Inc.. Government technical data includes 4 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5331-00-008-7873 |
| Primary Part Number | S8990-606 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Boeing Distribution Services X, Inc. |
| Status | ACTIVE |
| Cross-Sectional Height | 0.075 INCHES MINIMUM AND 0.081 INCHES MAXIMUM IN |
| Criticality Code Justification | FEAT |
| Center Hole Diameter | 0.461 INCHES MINIMUM AND 0.475 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 |
|---|---|
| S8990-606 | Boeing Distribution Services X, Inc. (USA) |
| Reference | Meaning |
|---|---|
| S8990-606ES | 5/9 Secondary reference Eriks B.v. |
| S8990-606 | 5/9 Secondary reference Alliedsignal Inc Dba Allied-Signal Aerospace Co |
| S8990-606 | 3/2 Design control — primary reference U.S. Government activity |
| S8990-606 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 10163192 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5331-00-008-7873 is a O-Ring, manufactured by Boeing Distribution Services X, Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-008-7873 has 1 manufacturer part number on file: S8990-606 (Boeing Distribution Services X, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5999-00-932-7654. Verify interchangeability with system specifications before substitution.
Key specifications for S8990-606: Cross-Sectional Height: 0.075 INCHES MINIMUM AND 0.081 INCHES MAXIMUM IN; Criticality Code Justification: FEAT; Special Features: CRITICAL SAFETY ITEM (CSI); Center Hole Diameter: 0.461 INCHES MINIMUM AND 0.475 INCHES MAXIMUM IN. 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.