The O-Ring, cataloged under National Stock Number 5331-01-369-0521, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Fluid Handling Llc. Government technical data includes 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-369-0521 |
| Primary Part Number | 335981010701 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Fluid Handling Llc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.375 INCHES NOMINAL IN |
| Center Hole Diameter | 9.812 INCHES NOMINAL IN |
| Material | RUBBER SYNTHETIC |
| 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 |
|---|---|
| 335981010701 PRIMARY | Fluid Handling Llc (USA) |
| Reference | Meaning |
|---|---|
| 50G10R606 | 5/9 Secondary reference Itt Corporation Dba Itt Standard |
| 335981010701 | 5/9 Secondary reference Itt Corporation Dba Itt Standard |
NSN 5331-01-369-0521 is a O-Ring, manufactured by Fluid Handling Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-369-0521 has 1 manufacturer part number on file: 335981010701 (Fluid Handling Llc).
Key specifications for 335981010701: Cross-Sectional Height: 0.375 INCHES NOMINAL IN; Center Hole Diameter: 9.812 INCHES NOMINAL IN; End Item Identification: COOLER,FLUID T/TYPE P/N 503610084002 USED ON BOARD 378 FT WHEC U S COAST GUARD VESSELS FT; Material: RUBBER SYNTHETIC. 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.