The O-Ring, cataloged under National Stock Number 5331-01-102-5600, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. 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 | 5331-01-102-5600 |
| Primary Part Number | 7L2181 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Cross-Sectional Height | 3.43 MILLIMETERS MINIMUM AND 3.63 MILLIMETERS MAXIMUM MM |
| Center Hole Diameter | 176.81 MILLIMETERS MINIMUM AND 177.97 MILLIMETERS MAXIMUM MM |
| Material | RUBBER POLYACRYLATE CLASS ACM |
| 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 |
|---|---|
| 7L2181 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 5331-01-102-5600 is a O-Ring, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-102-5600 has 1 manufacturer part number on file: 7L2181 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 7L2181: Cross-Sectional Height: 3.43 MILLIMETERS MINIMUM AND 3.63 MILLIMETERS MAXIMUM MM; Center Hole Diameter: 176.81 MILLIMETERS MINIMUM AND 177.97 MILLIMETERS MAXIMUM MM; Material: RUBBER POLYACRYLATE CLASS ACM. 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.