The O-Ring, cataloged under National Stock Number 5331-01-389-2269, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Eaton Corporation Dba Eaton Inoac Div Eaton. Government technical data includes 5 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 | 5331-01-389-2269 |
| Primary Part Number | 513BT-218 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Eaton Corporation Dba Eaton Inoac Div Eaton |
| Status | ACTIVE |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Hardness Rating | 65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM |
| Material Document and Classification | AMS 3238 ASSN STD SINGLE MATERIAL RESPONSE |
| Center Hole Diameter | 1.222 INCHES MINIMUM AND 1.246 INCHES MAXIMUM IN |
| Material | RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR |
| 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 |
|---|---|
| 513BT-218 PRIMARY | Eaton Corporation Dba Eaton Inoac Div Eaton (USA) |
NSN 5331-01-389-2269 is a O-Ring, manufactured by Eaton Corporation Dba Eaton Inoac Div Eaton, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-389-2269 has 1 manufacturer part number on file: 513BT-218 (Eaton Corporation Dba Eaton Inoac Div Eaton).
Key specifications for 513BT-218: Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Hardness Rating: 65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM; Material Document and Classification: AMS 3238 ASSN STD SINGLE MATERIAL RESPONSE; Center Hole Diameter: 1.222 INCHES MINIMUM AND 1.246 INCHES MAXIMUM IN. 5 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.