The Ring,wearing, cataloged under National Stock Number 4320-01-138-1966, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Air & Liquid Systems Corporation Dba Buffalo Pumps. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-138-1966 |
| Primary Part Number | 11509-1 |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — No Item Name Available |
| Manufacturer | Air & Liquid Systems Corporation Dba Buffalo Pumps |
| Status | ACTIVE |
| Body Inside Diameter | 2.625 INCHES NOMINAL IN |
| Body Outside Diameter | 2.875 INCHES NOMINAL IN |
| Corner Shape | SQUARE ALL CORNERS |
| Material | COPPER ALLOY |
| Body Style | PLAIN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| CA11590 PC 4X | Air & Liquid Systems Corporation Dba Buffalo Pumps (USA) |
| 11509-1 PRIMARY | Air & Liquid Systems Corporation Dba Buffalo Pumps (USA) |
| 11509-2 | Air & Liquid Systems Corporation Dba Buffalo Pumps (USA) |
NSN 4320-01-138-1966 is a Ring,wearing, manufactured by Air & Liquid Systems Corporation Dba Buffalo Pumps, classified under FSC 4320 (No Item Name Available). Status: active.
NSN 4320-01-138-1966 has 3 cross-referenced part numbers: CA11590 PC 4X (Air & Liquid Systems Corporation Dba Buffalo Pumps), 11509-1 (Air & Liquid Systems Corporation Dba Buffalo Pumps), 11509-2 (Air & Liquid Systems Corporation Dba Buffalo Pumps).
There are 6 known substitutes for 4320-01-138-1966: 5340-01-062-1128, 5340-01-189-4819, 2590-01-259-5740 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for 11509-1: Body Inside Diameter: 2.625 INCHES NOMINAL IN; Body Outside Diameter: 2.875 INCHES NOMINAL IN; Corner Shape: SQUARE ALL CORNERS; Material: COPPER ALLOY. 6 total characteristics are documented in the Federal Logistics Information System.