The O-Ring, cataloged under National Stock Number 5331-00-839-2660, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Watts Regulator Company. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-839-2660 |
| Primary Part Number | 602C101Z6 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Watts Regulator Company |
| Status | ACTIVE |
| Cross-Sectional Height | 0.125 INCHES NOMINAL IN |
| Material | RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR |
| 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 |
|---|---|
| 602C101Z6 PRIMARY | Watts Regulator Company (USA) |
| 603-1INCHPC101 | Watts Regulator Company (USA) |
| Reference | Meaning |
|---|---|
| ARP238-9357 | 5/9 Secondary reference U.S. Government activity |
NSN 5331-00-839-2660 is a O-Ring, manufactured by Watts Regulator Company, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-839-2660 has 2 manufacturer part numbers on file: 602C101Z6 (Watts Regulator Company), 603-1INCHPC101 (Watts Regulator Company).
Key specifications for 602C101Z6: Cross-Sectional Height: 0.125 INCHES NOMINAL IN; Material: RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR. 2 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.