The O-Ring, cataloged under National Stock Number 5331-00-618-1657, 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 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5331-00-618-1657 |
| Primary Part Number | MS29561-141 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-Ring |
| Manufacturer | Sae International Dba Sae International |
| Status | CANCELLED |
| Elongation Percentage | 250 MAXIMUM |
| Center Hole Diameter | 2.290 INCHES MINIMUM AND 2.310 INCHES MAXIMUM IN |
| Outside Diameter | 2.506 INCHES NOMINAL IN |
| Hardness Rating | 70.0 SHORE DUROMETER A NOMINAL |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| Cross-Sectional Height | 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| OR1-141 | Orion S/a (BRA) |
| 2-141 47-071 | Dolly Mfg Corp (USA) |
| 55-109 | Kirkhill Ta Haskon Div (USA) |
| SAE-AS29561 | Sae International Dba Sae International (USA) |
| 5331PL1279552 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
| MS29561-141 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| MS29561-141 | Society of Automotive Engineers Inc (USA) |
| MS29561-141 PRIMARY | Sae International Dba Sae International (USA) |
| MS29561-141 | Leonardo Spa Helicopters Division - Production Site (ITA) |
NSN 5331-00-618-1657 is a O-Ring, manufactured by Sae International Dba Sae International, classified under FSC 5331 (O-Ring). Status: cancelled.
NSN 5331-00-618-1657 has 9 cross-referenced part numbers: OR1-141 (Orion S/a), 2-141 47-071 (Dolly Mfg Corp), 55-109 (Kirkhill Ta Haskon Div), SAE-AS29561 (Sae International Dba Sae International), 5331PL1279552 (Jednolity Indeks Materialowy - Uniform Material Index) and 4 more.
There are 6 known substitutes for 5331-00-618-1657: 5120-00-132-5039, 4730-00-277-8273, 5330-00-641-0980 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for MS29561-141: Elongation Percentage: 250 MAXIMUM; Center Hole Diameter: 2.290 INCHES MINIMUM AND 2.310 INCHES MAXIMUM IN; Outside Diameter: 2.506 INCHES NOMINAL IN; Hardness Rating: 70.0 SHORE DUROMETER A NOMINAL. 6 total characteristics are documented in the Federal Logistics Information System.
NSN 5331-00-618-1657 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.