The O-Ring, cataloged under National Stock Number 5331-00-492-2070, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Grimes Aerospace Company. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 13 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5331-00-492-2070 |
| Primary Part Number | 25C85-75 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-Ring |
| Manufacturer | Grimes Aerospace Company |
| Status | CANCELLED |
| Material | RUBBER FLUOROSILICONE CLASS FQ |
| Cross-Sectional Height | 0.069 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN |
| Hardness Rating | 70.0 SHORE DUROMETER A NOMINAL |
| Center Hole Diameter | 0.409 INCHES MINIMUM AND 0.419 INCHES MAXIMUM IN |
| Outside Diameter | 0.558 INCHES NOMINAL IN |
| Elongation Percentage | 125 MAXIMUM |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 25C85-75 | Grimes Aerospace Company (USA) |
| M25988-1-905 | Zf Industrieantriebe Witten Gmbh (DEU) |
| M25988-1-905 | The Boeing Company Div Defense (USA) |
| P33367 | Martin-Baker Aircraft Company Limited (GBR) |
| 5331PL0657013 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
| MIL-DTL-25988/1 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| CL25C85 | Grimes Aerospace Company (USA) |
| 035001 | Safran Martin-Baker France (FRA) |
| M25988/1-905 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| MILR25988 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| 3-905L1120-70 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| 10163300 | Nimikkeistokeskus Ncb Finland (FIN) |
| M25988/1-905ES | Eriks B.v. (NLD) |
NSN 5331-00-492-2070 is a O-Ring, manufactured by Grimes Aerospace Company, classified under FSC 5331 (O-Ring). Status: cancelled.
NSN 5331-00-492-2070 has 13 cross-referenced part numbers: 25C85-75 (Grimes Aerospace Company), M25988-1-905 (Zf Industrieantriebe Witten Gmbh), M25988-1-905 (The Boeing Company Div Defense), P33367 (Martin-Baker Aircraft Company Limited), 5331PL0657013 (Jednolity Indeks Materialowy - Uniform Material Index) and 8 more.
There are 2 known substitutes for 5331-00-492-2070: 4330-00-078-4153, 4730-00-595-0083. Verify interchangeability with system specifications before substitution.
Key specifications for 25C85-75: Material: RUBBER FLUOROSILICONE CLASS FQ; Cross-Sectional Height: 0.069 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN; Hardness Rating: 70.0 SHORE DUROMETER A NOMINAL; Center Hole Diameter: 0.409 INCHES MINIMUM AND 0.419 INCHES MAXIMUM IN. 6 total characteristics are documented in the Federal Logistics Information System.
NSN 5331-00-492-2070 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.