The O-Ring, cataloged under National Stock Number 5331-01-061-3331, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Circor Aerospace, Inc. Dba Circor Aerospace Inc. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 5 manufacturers, 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 | 5331-01-061-3331 |
| Primary Part Number | 4218-73 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-Ring |
| Manufacturer | Circor Aerospace, Inc. Dba Circor Aerospace Inc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Material | RUBBER CHLOROPRENE CLASS CR |
| Center Hole Diameter | 1.228 INCHES MINIMUM AND 1.240 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 63842 | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
| 750 | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
| 5023-73 | Circor Aerospace, Inc. Dba Circor Aerospace Inc (USA) |
| 40401-09 PART 750 FIND 9 | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
| 4218-73 PRIMARY | Circor Aerospace, Inc. Dba Circor Aerospace Inc (USA) |
| 2-218C557-7 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| 2-218C557-7 | Zf Industrieantriebe Witten Gmbh (DEU) |
NSN 5331-01-061-3331 is a O-Ring, manufactured by Circor Aerospace, Inc. Dba Circor Aerospace Inc, classified under FSC 5331 (O-Ring). Status: active.
NSN 5331-01-061-3331 has 7 cross-referenced part numbers: 63842 (Hamilton Sundstrand Corporation Dba Collins Aerospace), 750 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 5023-73 (Circor Aerospace, Inc. Dba Circor Aerospace Inc), 40401-09 PART 750 FIND 9 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 4218-73 (Circor Aerospace, Inc. Dba Circor Aerospace Inc) and 2 more.
There are 4 known substitutes for 5331-01-061-3331: 5310-00-134-4169, 4730-00-287-1706, 1680-01-341-0626 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for 4218-73: Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Material: RUBBER CHLOROPRENE CLASS CR; Center Hole Diameter: 1.228 INCHES MINIMUM AND 1.240 INCHES MAXIMUM IN. 3 total characteristics are documented in the Federal Logistics Information System.