The O-Ring, cataloged under National Stock Number 5331-00-631-1342, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Parker-Hannifin Corporation Div Engineered Polymer Systems Division (eps). Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 34 commercial cross-references from 29 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 | 5331-00-631-1342 |
| Primary Part Number | 2-026 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-Ring |
| Manufacturer | Parker-Hannifin Corporation Div Engineered Polymer Systems Division (eps) |
| Status | CANCELLED |
| Outside Diameter | 1.362 INCHES MINIMUM AND 1.396 INCHES MAXIMUM IN |
| Center Hole Diameter | 1.233 INCHES MINIMUM AND 1.245 INCHES MAXIMUM IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| Cross-Sectional Height | 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 230079020 | Rosomak S.a (POL) |
| MS28775-026 | Aviation Spares and Repairs Ltd (GBR) |
| C4072525AL | Rheinmetall Italia Spa (ITA) |
| MS28775-026 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| 2-026 PRIMARY | Parker-Hannifin Corporation Div Engineered Polymer Systems Division (eps) (USA) |
| 026-7377 | Parker Hannifin Corporation Div O-Ring Division (USA) |
| 74453020026 | Elbitamerica, Inc. (USA) |
| 19-04-135-031 | Safran Electrical & Power (FRA) |
| P-ZLAB-0041773 | Madzeal SL (ESP) |
| 2-026 N304-75 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| 4200799 | Oshkosh Defense Llc (USA) |
| MS28775-026 | Society of Automotive Engineers Inc (USA) |
| 2-026 N304-75 | Parker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division (USA) |
| MS28775-026 PRIMARY | Sae International Dba Sae International (USA) |
| P48026-026 | Acushnet Rubber Company, Inc. Dba Precix (USA) |
| 026-737-70 | Parker Hannifin Corporation Div O-Ring Division (USA) |
| 7941379-003 | Delco Electronics Corp Delco Systems Opns (USA) |
| MS28775-026 | Aero Stock (FRA) |
| 2-026 | Parker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division (USA) |
| MS28775-026 | Leonardo Spa Helicopters Division - Production Site (ITA) |
NSN 5331-00-631-1342 is a O-Ring, manufactured by Parker-Hannifin Corporation Div Engineered Polymer Systems Division (eps), classified under FSC 5331 (O-Ring). Status: cancelled.
NSN 5331-00-631-1342 has 34 cross-referenced part numbers: 230079020 (Rosomak S.a), MS28775-026 (Aviation Spares and Repairs Ltd), C4072525AL (Rheinmetall Italia Spa), MS28775-026 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 2-026 (Parker-Hannifin Corporation Div Engineered Polymer Systems Division (eps)) and 29 more.
There are 6 known substitutes for 5331-00-631-1342: 5331-00-003-9417, 6240-00-143-3049, 5331-01-123-3298 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for 2-026: Outside Diameter: 1.362 INCHES MINIMUM AND 1.396 INCHES MAXIMUM IN; Center Hole Diameter: 1.233 INCHES MINIMUM AND 1.245 INCHES MAXIMUM IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR; Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN. 4 total characteristics are documented in the Federal Logistics Information System.
NSN 5331-00-631-1342 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.