The O-Ring, cataloged under National Stock Number 5331-01-216-6649, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Atk Launch Systems Llc Dba Atk Launch Systems-Promontory Div Propulsion Systems - Promontory. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-216-6649 |
| Primary Part Number | 54545-02 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Atk Launch Systems Llc Dba Atk Launch Systems-Promontory Div Propulsion Systems - Promontory |
| Status | ACTIVE |
| Cross-Sectional Height | 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN |
| Center Hole Diameter | 29.735 INCHES MINIMUM AND 30.015 INCHES MAXIMUM IN |
| Material | RUBBER |
| 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 |
|---|---|
| 54545-02 PRIMARY | Atk Launch Systems Llc Dba Atk Launch Systems-Promontory Div Propulsion Systems - Promontory (USA) |
NSN 5331-01-216-6649 is a O-Ring, manufactured by Atk Launch Systems Llc Dba Atk Launch Systems-Promontory Div Propulsion Systems - Promontory, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-216-6649 has 1 manufacturer part number on file: 54545-02 (Atk Launch Systems Llc Dba Atk Launch Systems-Promontory Div Propulsion Systems - Promontory).
Key specifications for 54545-02: Cross-Sectional Height: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN; Center Hole Diameter: 29.735 INCHES MINIMUM AND 30.015 INCHES MAXIMUM IN; Material: RUBBER. 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.