The O-Ring, cataloged under National Stock Number 5331-01-304-9821, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-304-9821 |
| Primary Part Number | 20A11-X-M-443 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-Ring |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging |
| Status | ACTIVE |
| Cross-Sectional Height | 0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN |
| Criticality Code Justification | ZZZW |
| Elongation Percentage | 160 MAXIMUM |
| Center Hole Diameter | 7.445 INCHES MINIMUM AND 7.505 INCHES MAXIMUM IN |
| Temp Rating | -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| Peripheral Diameter | 8.025 INCHES NOMINAL IN |
| Departure From Cited Document | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 20A11-X-M-443 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA) |
| MS28775-443 | Sae International Dba Sae International (USA) |
| PL-10022-F-18ITEM456E | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA) |
| MS28775-443 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| PL-10022-F-18ITEM456E | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| 20A11-X-M-443 | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| SAE-AS28775 | Sae International Dba Sae International (USA) |
| MS28775-443 | Society of Automotive Engineers Inc (USA) |
NSN 5331-01-304-9821 is a O-Ring, manufactured by Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging, classified under FSC 5331 (O-Ring). Status: active.
NSN 5331-01-304-9821 has 8 cross-referenced part numbers: 20A11-X-M-443 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), MS28775-443 (Sae International Dba Sae International), PL-10022-F-18ITEM456E (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), MS28775-443 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), PL-10022-F-18ITEM456E (Curtiss-Wright Electro-Mechanical Corporation Div Epd) and 3 more.
There is 1 known substitute for 5331-01-304-9821: 5331-00-815-2450. Verify interchangeability with system specifications before substitution.
Key specifications for 20A11-X-M-443: Cross-Sectional Height: 0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN; Criticality Code Justification: ZZZW; Elongation Percentage: 160 MAXIMUM; Center Hole Diameter: 7.445 INCHES MINIMUM AND 7.505 INCHES MAXIMUM IN. 8 total characteristics are documented in the Federal Logistics Information System.