The O-Ring, cataloged under National Stock Number 5331-00-903-3954, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Page Chester Ltd Dba Cooperative Industries Div Cooperative Industries Aerospace Defense. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-903-3954 |
| Primary Part Number | 72478 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-Ring |
| Manufacturer | Page Chester Ltd Dba Cooperative Industries Div Cooperative Industries Aerospace Defense |
| Status | ACTIVE |
| Center Hole Diameter | 0.771 INCHES MINIMUM AND 0.791 INCHES MAXIMUM IN |
| Material | RUBBER POLYMETHYLENE-PERFLUOROALKYLENE CLASS FKM |
| Cross-Sectional Height | 0.028 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 72478 PRIMARY | Page Chester Ltd Dba Cooperative Industries Div Cooperative Industries Aerospace Defense (USA) |
NSN 5331-00-903-3954 is a O-Ring, manufactured by Page Chester Ltd Dba Cooperative Industries Div Cooperative Industries Aerospace Defense, classified under FSC 5331 (O-Ring). Status: active.
NSN 5331-00-903-3954 has 1 cross-referenced part number: 72478 (Page Chester Ltd Dba Cooperative Industries Div Cooperative Industries Aerospace Defense).
There are 4 known substitutes for 5331-00-903-3954: 4820-00-135-4775, 4820-00-783-6477, 4820-01-073-1802 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for 72478: Center Hole Diameter: 0.771 INCHES MINIMUM AND 0.791 INCHES MAXIMUM IN; Material: RUBBER POLYMETHYLENE-PERFLUOROALKYLENE CLASS FKM; Cross-Sectional Height: 0.028 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN. 3 total characteristics are documented in the Federal Logistics Information System.