The O-Ring, cataloged under National Stock Number 5331-00-405-0797, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-405-0797 |
| Primary Part Number | 2533405-253 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Center Hole Diameter | 5.336 INCHES MINIMUM AND 5.382 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 |
|---|---|
| 2533405-253 PRIMARY | Naval Sea Systems Command (USA) |
| 253-737-70 PRIMARY | Parker Hannifin Corporation Div O-Ring Division (USA) |
| Reference | Meaning |
|---|---|
| 2-253N304-70 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
| 2533405-253 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| 5331PL0891459 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 5331PL1280048 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5331-00-405-0797 is a O-Ring, manufactured by Naval Sea Systems Command, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-405-0797 has 2 manufacturer part numbers on file: 2533405-253 (Naval Sea Systems Command), 253-737-70 (Parker Hannifin Corporation Div O-Ring Division).
Key specifications for 2533405-253: Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Center Hole Diameter: 5.336 INCHES MINIMUM AND 5.382 INCHES MAXIMUM IN; End Item Identification: GUIDED MISSILE LAUNCHING SYSTEM, MK 26 (GMLS); KIDD CLASS DDG; ARLEIGH BURKE CLASS DDG; TICONDEROGA CLASS CG (47); VIRGINIA CLASS CGN (41); GUN, 5-IN./54 CAL, MK-42 & 45; SPRUANCE CLASS DD (963); Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR. 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.