The O-Ring, cataloged under National Stock Number 5331-00-810-0187, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Chicago Gasket Co. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 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 | 5331-00-810-0187 |
| Primary Part Number | AN-6227-50 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-Ring |
| Manufacturer | Chicago Gasket Co |
| Status | ACTIVE |
| Material | RUBBER SYNTHETIC |
| Cross-Sectional Height | 0.187 INCHES NOMINAL IN |
| Criticality Code Justification | FEAT |
| Center Hole Diameter | 4.250 INCHES NOMINAL IN |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY ESPECIALLY PROCESSED FOR USE WITH LIQUID OXYGEN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| AN-6227-50 | Chicago Gasket Co (USA) |
| AN6227B-50 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| AN6227B50 | Steel Electric Products Co Inc (USA) |
| PS1-30-5-50 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| AN6227-50 | Federal-Mogul Corp Chassis Products Div (USA) |
NSN 5331-00-810-0187 is a O-Ring, manufactured by Chicago Gasket Co, classified under FSC 5331 (O-Ring). Status: active.
NSN 5331-00-810-0187 has 5 cross-referenced part numbers: AN-6227-50 (Chicago Gasket Co), AN6227B-50 (Parker-Hannifin Corp Div O-Ring Division), AN6227B50 (Steel Electric Products Co Inc), PS1-30-5-50 (Parker-Hannifin Corp Div O-Ring Division), AN6227-50 (Federal-Mogul Corp Chassis Products Div).
There is 1 known substitute for 5331-00-810-0187: 5330-00-359-4252. Verify interchangeability with system specifications before substitution.
Key specifications for AN-6227-50: Material: RUBBER SYNTHETIC; Cross-Sectional Height: 0.187 INCHES NOMINAL IN; Special Features: CLEANED AND PACKAGED PER MIL-P-52211 /CE; Criticality Code Justification: FEAT. 6 total characteristics are documented in the Federal Logistics Information System.