The O-Ring, cataloged under National Stock Number 5331-01-221-4208, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Sae International Dba Sae International. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-221-4208 |
| Primary Part Number | AMS7529 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-Ring |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Hardness Rating | 90.0 SHORE DUROMETER A NOMINAL |
| Material | RUBBER FLUOROCARBON CLASS FPM |
| Center Hole Diameter | 1.239 INCHES NOMINAL IN |
| Temp Rating | -20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.070 INCHES NOMINAL IN |
| Peripheral Diameter | 1.379 INCHES NOMINAL IN |
| Departure From Cited Document | CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D |
| Criticality Code Justification | ZZZW |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| AMS7529 | Sae International Dba Sae International (USA) |
| AS3581-026CP | Society of Automotive Engineers Inc (USA) |
| AMS7529 | Society of Automotive Engineers Inc (USA) |
| SAE-AS3581 | Sae International Dba Sae International (USA) |
| AS3581-026CP | Sae International Dba Sae International (USA) |
| M83248/2-026 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| PL7374 ITEM 30 | Hale Hamilton (valves) Ltd Div Cad Uxbridge (GBR) |
| AS3581-026 | Society of Automotive Engineers Inc (USA) |
| M83248/2-026CP | Naval Inventory Control Point Mechanicsburg (USA) |
NSN 5331-01-221-4208 is a O-Ring, manufactured by Sae International Dba Sae International, classified under FSC 5331 (O-Ring). Status: active.
NSN 5331-01-221-4208 has 9 cross-referenced part numbers: AMS7529 (Sae International Dba Sae International), AS3581-026CP (Society of Automotive Engineers Inc), AMS7529 (Society of Automotive Engineers Inc), SAE-AS3581 (Sae International Dba Sae International), AS3581-026CP (Sae International Dba Sae International) and 4 more.
There are 3 known substitutes for 5331-01-221-4208: 5331-00-166-8412, 5331-01-203-6549, 5330-01-227-2198. Verify interchangeability with system specifications before substitution.
Key specifications for AMS7529: Hardness Rating: 90.0 SHORE DUROMETER A NOMINAL; Material: RUBBER FLUOROCARBON CLASS FPM; Center Hole Diameter: 1.239 INCHES NOMINAL IN; Temp Rating: -20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF. 8 total characteristics are documented in the Federal Logistics Information System.