The O-Ring, cataloged under National Stock Number 5331-00-251-9375, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Sae International Dba Sae International. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 20 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-251-9375 |
| Primary Part Number | MS29513-343 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Cross-Sectional Height | 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN |
| Outside Diameter | 4.145 INCHES NOMINAL IN |
| Hardness Rating | 65.0 SHORE DUROMETER A NOMINAL |
| Elongation Percentage | 200 MAXIMUM |
| Center Hole Diameter | 3.710 INCHES MINIMUM AND 3.740 INCHES MAXIMUM IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| MS29513-343 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| RT253-65-343 | 5/9 Secondary reference Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp |
| 457-60-343 | 5/9 Secondary reference Parco, Llc |
| 7866-343 | 5/9 Secondary reference Parker Hannifin Corporation Div O-Ring Division |
| 725-70-343 | 5/9 Secondary reference U.S. Government activity |
| 1793-343 | 5/9 Secondary reference U.S. Government activity |
| 0065246.53.63 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 10V60-141-343 | 5/9 Secondary reference Houghton International Inc. |
| MS29513-343 | 5/9 Secondary reference U.S. Government activity |
| SAE-AS29513 | 3/1 Design control — primary reference Sae International Dba Sae International |
| 2-343N674-70 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 2-343 N602-70 | 5/9 Secondary reference Dolly Mfg Corp |
| C-69-343 | 5/9 Secondary reference Federal-Mogul Corp Government Sales Dept |
| SR-822A-60-343 | 5/9 Secondary reference U.S. Government activity |
| 2-343 N602-70 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
| PX1775-343 | 5/9 Secondary reference Acushnet Rubber Company, Inc. Dba Precix |
| 13207E1938FN3 | 5/9 Secondary reference U.S. Government activity |
| PRP568-343-457-60 | 5/9 Secondary reference Parco, Llc |
| 10436736 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 5330002519375 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| MS29513-343 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5331-00-251-9375 is a O-Ring, manufactured by Sae International Dba Sae International, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-251-9375 has 1 manufacturer part number on file: MS29513-343 (Sae International Dba Sae International).
Key specifications for MS29513-343: Cross-Sectional Height: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN; Outside Diameter: 4.145 INCHES NOMINAL IN; Hardness Rating: 65.0 SHORE DUROMETER A NOMINAL; Elongation Percentage: 200 MAXIMUM. 6 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.