The O-Ring, cataloged under National Stock Number 5331-01-310-2363, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Flexfab Llc. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-310-2363 |
| Primary Part Number | 1603AS602 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Flexfab Llc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.560 INCHES NOMINAL IN |
| Material | RUBBER POLYSULFIDE CLASS T |
| 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 |
|---|---|
| 1603AS602 PRIMARY | Flexfab Llc (USA) |
| Reference | Meaning |
|---|---|
| 1603AS602 | C/1 Advisory reference — outside the item-of-supply concept Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
NSN 5331-01-310-2363 is a O-Ring, manufactured by Flexfab Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-310-2363 has 1 manufacturer part number on file: 1603AS602 (Flexfab Llc).
Key specifications for 1603AS602: Cross-Sectional Height: 0.560 INCHES NOMINAL IN; End Item Identification: W/S: HELICOPTER, SEAHAWK, H-60; AIRCRAFT, TOMCAT F-14; AIRCRAFT, HAWKEYE E-2C; HELICOPTER, MH-53E; HELICOPTER, SEASPRITE H-2; HELICOPTER, CARRIER BASED ASW, SH-60F; AIRCRAFT, VIKING S-3B; HELICOPTER, SEARCH AND RESCUE, HH-60H; HELICOPTER, ADVANCE ATTACK, AH-1W; HELICOPTER, USCG SEARCH AND RESCUE, HH-60J W; Material: RUBBER POLYSULFIDE CLASS T. 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.