The O-Ring, cataloged under National Stock Number 5331-00-988-8809, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5331-00-988-8809 |
| Primary Part Number | MS29561-127 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-Ring |
| Manufacturer | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| Status | CANCELLED |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| Hardness Rating | 70.0 SHORE DUROMETER A NOMINAL |
| Outside Diameter | 1.630 INCHES NOMINAL IN |
| Center Hole Diameter | 1.418 INCHES MINIMUM AND 1.430 INCHES MAXIMUM IN |
| Cross-Sectional Height | 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN |
| Elongation Percentage | 250 MAXIMUM |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MS29561-127 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| SAE-AS29561 | Sae International Dba Sae International (USA) |
| MS29561-127 | Leonardo Spa Helicopters Division - Production Site (ITA) |
| MS29561-127 | Sae International Dba Sae International (USA) |
| TD500108-26 | Eaton Corp Dba Eaton Aerospace Jackson (USA) |
| MS29561-127 | Tecno Trade S.r.l. (ITA) |
| MS29561-127 | Society of Automotive Engineers Inc (USA) |
| AS29561 | Sae International Dba Sae International (USA) |
NSN 5331-00-988-8809 is a O-Ring, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5331 (O-Ring). Status: cancelled.
NSN 5331-00-988-8809 has 8 cross-referenced part numbers: MS29561-127 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), SAE-AS29561 (Sae International Dba Sae International), MS29561-127 (Leonardo Spa Helicopters Division - Production Site), MS29561-127 (Sae International Dba Sae International), TD500108-26 (Eaton Corp Dba Eaton Aerospace Jackson) and 3 more.
There are 7 known substitutes for 5331-00-988-8809: 5331-00-064-4641, 5331-00-800-5182, 5331-00-800-6870 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for MS29561-127: Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR; Hardness Rating: 70.0 SHORE DUROMETER A NOMINAL; Outside Diameter: 1.630 INCHES NOMINAL IN; Center Hole Diameter: 1.418 INCHES MINIMUM AND 1.430 INCHES MAXIMUM IN. 6 total characteristics are documented in the Federal Logistics Information System.
NSN 5331-00-988-8809 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.