The O-Ring, cataloged under National Stock Number 5331-00-251-3817, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Parker Hannifin Corporation Div O-Ring Division. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-251-3817 |
| Primary Part Number | 110-3238 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Parker Hannifin Corporation Div O-Ring Division |
| Status | ACTIVE |
| Cross-Sectional Height | 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN |
| Center Hole Diameter | 0.357 INCHES MINIMUM AND 0.367 INCHES MAXIMUM IN |
| Material | RUBBER ETHYLENE-PROPYLENE CLASS EPM |
| 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 |
|---|---|
| 110-3238 PRIMARY | Parker Hannifin Corporation Div O-Ring Division (USA) |
| 2518756-1 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| 2-110-E515-8 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| 55893840-110 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 0RE-110 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 1000-0030-110 | 5/9 Secondary reference Mission Systems Orchard Park Inc |
| 1000-0030-110 | 5/9 Secondary reference Carleton Technologies Inc Div Tampa Facility |
| E515-80-110 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5331-00-251-3817 is a O-Ring, manufactured by Parker Hannifin Corporation Div O-Ring Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-251-3817 has 4 manufacturer part numbers on file: 110-3238 (Parker Hannifin Corporation Div O-Ring Division), 2518756-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 2-110-E515-8 (Parker-Hannifin Corp Div O-Ring Division), 55893840-110 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 5331-01-280-6790. Verify interchangeability with system specifications before substitution.
Key specifications for 110-3238: Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN; Center Hole Diameter: 0.357 INCHES MINIMUM AND 0.367 INCHES MAXIMUM IN; Material: RUBBER ETHYLENE-PROPYLENE CLASS EPM. 3 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.