The O-Ring, cataloged under National Stock Number 5331-00-579-7921, 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 19 commercial cross-references from 15 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 | 5331-00-579-7921 |
| Primary Part Number | MS28775-245 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-Ring |
| Manufacturer | Sae International Dba Sae International |
| Status | CANCELLED |
| Outside Diameter | 4.637 INCHES NOMINAL IN |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Elongation Percentage | 160 MAXIMUM |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| Temp Rating | -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF |
| Center Hole Diameter | 4.344 INCHES MINIMUM AND 4.374 INCHES MAXIMUM IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 6230-23 | Ludowici Limited (AUS) |
| SOR4.359X.139-70NBR | Steeple Incorporated (CAN) |
| MS28775-245ES | Eriks B.v. (NLD) |
| MS28775-245 PRIMARY | Sae International Dba Sae International (USA) |
| ARP568-245MILP5 516-70DURM | Zf Industrieantriebe Witten Gmbh (DEU) |
| 2-245N304-75 | Zf Industrieantriebe Witten Gmbh (DEU) |
| SAE-AS28775 | Sae International Dba Sae International (USA) |
| MS28775-245 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| SP901B23 | Trelleborg Sealing Solutions (uk) Ltd (GBR) |
| MS28775-245 | Society of Automotive Engineers Inc (USA) |
| 456-6849 | Nimikkeistokeskus Ncb Finland (FIN) |
| ASC1558523 | Asc Pty Ltd (AUS) |
| 5331PL0890589 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
| 5330005797921 | E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
| MS28775-245 | Age Logistics Corporation (USA) |
| AN6230B23 | Zf Industrieantriebe Witten Gmbh (DEU) |
| MS28775-245 | Bae Systems Land & Armaments L.p. (USA) |
| 74055 PC54 | Naval Inventory Control Point Mechanicsburg (USA) |
| 513CD245 | Zf Industrieantriebe Witten Gmbh (DEU) |
NSN 5331-00-579-7921 is a O-Ring, manufactured by Sae International Dba Sae International, classified under FSC 5331 (O-Ring). Status: cancelled.
NSN 5331-00-579-7921 has 19 cross-referenced part numbers: 6230-23 (Ludowici Limited), SOR4.359X.139-70NBR (Steeple Incorporated), MS28775-245ES (Eriks B.v.), MS28775-245 (Sae International Dba Sae International), ARP568-245MILP5 516-70DURM (Zf Industrieantriebe Witten Gmbh) and 14 more.
There are 6 known substitutes for 5331-00-579-7921: 5330-00-054-6881, 5330-00-378-2566, 5331-00-722-4976 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for MS28775-245: Outside Diameter: 4.637 INCHES NOMINAL IN; Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Elongation Percentage: 160 MAXIMUM; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR. 6 total characteristics are documented in the Federal Logistics Information System.
NSN 5331-00-579-7921 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.