The O-Ring, cataloged under National Stock Number 5331-01-585-3755, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Introtek International, L.p. Dba Introtek. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-585-3755 |
| Primary Part Number | 012-2201-237 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Introtek International, L.p. Dba Introtek |
| Status | ACTIVE |
| Cross-Sectional Height | 0.139 INCHES NOMINAL IN |
| Center Hole Diameter | 3.359 INCHES NOMINAL IN |
| Material | RUBBER FLUOROCARBON CLASS FPM |
| 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 |
|---|---|
| 012-2201-237 | Introtek International, L.p. Dba Introtek (USA) |
| 012-2201-237 | Magnetrol International Nv (BEL) |
| Reference | Meaning |
|---|---|
| 012-2201-237 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5331-01-585-3755 is a O-Ring, manufactured by Introtek International, L.p. Dba Introtek, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-585-3755 has 2 manufacturer part numbers on file: 012-2201-237 (Introtek International, L.p. Dba Introtek), 012-2201-237 (Magnetrol International Nv).
Key specifications for 012-2201-237: Cross-Sectional Height: 0.139 INCHES NOMINAL IN; Center Hole Diameter: 3.359 INCHES NOMINAL IN; End Item Identification: ECHOTEL MODEL 961 AND 962 ULTRASONIC LEVEL SWITCHES; Material: RUBBER FLUOROCARBON CLASS FPM. 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.