The O-Ring, cataloged under National Stock Number 5331-01-476-7838, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Div Epd. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-476-7838 |
| Primary Part Number | 20A11XMS259 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Status | ACTIVE |
| Hardness Rating | 75.0 SHORE DUROMETER A NOMINAL |
| Material Document and Classification | MIL-R-83248,TY 1,CL 1 MIL SPEC SINGLE MATERIAL RESPONSE |
| 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 |
|---|---|
| 20A11XMS259 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| PL14006N18ITEM456C | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| 20A11XMS259 | 3/9 Design control — primary reference U.S. Government activity |
| PL14006N18ITEM456C | 5/9 Secondary reference U.S. Government activity |
NSN 5331-01-476-7838 is a O-Ring, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-476-7838 has 2 manufacturer part numbers on file: 20A11XMS259 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), PL14006N18ITEM456C (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
Key specifications for 20A11XMS259: Hardness Rating: 75.0 SHORE DUROMETER A NOMINAL; Material Document and Classification: MIL-R-83248,TY 1,CL 1 MIL SPEC SINGLE MATERIAL RESPONSE; Part Name Assigned by Controlling Agency: 0-RING(GLAND RING); End Item Identification: SUB ATMOSPHERE CONTROL (88032) PARTS LIST 14006N18. 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.