The O-Ring, cataloged under National Stock Number 5331-00-255-5318, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Parker-Hannifin Corp Div O-Ring Division. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 6 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5331-00-255-5318 |
| Primary Part Number | 2-210E540-80 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Parker-Hannifin Corp Div O-Ring Division |
| Status | ACTIVE |
| Temp Rating | -70.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Outside Diameter | 0.994 INCHES MINIMUM AND 1.030 INCHES MAXIMUM IN |
| Hardness Rating | 80.0 SHORE DUROMETER A NOMINAL |
| Center Hole Diameter | 0.728 INCHES MINIMUM AND 0.740 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 |
|---|---|
| 2-210E540-80 PRIMARY | Parker-Hannifin Corp Div O-Ring Division (USA) |
| 538111 | Kodak Gmbh (DEU) |
| SAE AS568B-210 | Sae International Dba Sae International (USA) |
| 538111 | Kodak (FRA) |
| 538111 | Eastman Kodak Co (USA) |
| N141005720 | Wass Srl (ITA) |
| Reference | Meaning |
|---|---|
| 2-210 E540-80 | 5/9 Secondary reference Parker Hannifin Gmbh O-Ring Division |
| ASTM M2AA810A13EA14F17 | 5/2 Secondary reference U.S. Government activity |
| SAE AS568B-210 | 5/9 Secondary reference U.S. Government activity |
| 2-210E540-8 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5331-00-255-5318 is a O-Ring, manufactured by Parker-Hannifin Corp Div O-Ring Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-255-5318 has 6 manufacturer part numbers on file: 2-210E540-80 (Parker-Hannifin Corp Div O-Ring Division), 538111 (Kodak Gmbh), SAE AS568B-210 (Sae International Dba Sae International), 538111 (Kodak), 538111 (Eastman Kodak Co) and 1 more.
1 possible match (shared part number, not a government interchangeability claim): 5120-00-263-4138. Verify interchangeability with system specifications before substitution.
Key specifications for 2-210E540-80: Temp Rating: -70.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Outside Diameter: 0.994 INCHES MINIMUM AND 1.030 INCHES MAXIMUM IN; Hardness Rating: 80.0 SHORE DUROMETER A NOMINAL. 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.