The O-Ring, cataloged under National Stock Number 5331-01-651-1640, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Drs Naval Power Systems, Inc. Dba Drs Power & Control Technologies Inc Div Drs Naval Power Systems. Government technical data includes 8 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 | 5331-01-651-1640 |
| Primary Part Number | T335V228 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Drs Naval Power Systems, Inc. Dba Drs Power & Control Technologies Inc Div Drs Naval Power Systems |
| Status | ACTIVE |
| Temp Rating | -20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.125 INCHES NOMINAL IN |
| Outside Diameter | 2.500 INCHES NOMINAL IN |
| Hardness Rating | 90.0 SHORE DUROMETER A NOMINAL |
| Material Document and Classification | ASTM D2000 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE |
| Color | BLACK OR BROWN |
| Center Hole Diameter | 2.250 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 |
|---|---|
| T335V228 PRIMARY | Drs Naval Power Systems, Inc. Dba Drs Power & Control Technologies Inc Div Drs Naval Power Systems (USA) |
NSN 5331-01-651-1640 is a O-Ring, manufactured by Drs Naval Power Systems, Inc. Dba Drs Power & Control Technologies Inc Div Drs Naval Power Systems, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-651-1640 has 1 manufacturer part number on file: T335V228 (Drs Naval Power Systems, Inc. Dba Drs Power & Control Technologies Inc Div Drs Naval Power Systems).
Key specifications for T335V228: Temp Rating: -20.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.125 INCHES NOMINAL IN; Outside Diameter: 2.500 INCHES NOMINAL IN; Hardness Rating: 90.0 SHORE DUROMETER A NOMINAL. 8 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.