The O-Ring, cataloged under National Stock Number 5331-01-291-5636, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Wbf Co. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (CAGE 830Q4); Wbf Co (CAGE 0WMW9) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-291-5636 |
| Primary Part Number | 2301190145 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Wbf Co |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| HL-19526 PIECE 115 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 2301190145 PRIMARY | Wbf Co (USA) |
| Reference | Meaning |
|---|---|
| HL-19526 PIECE 115 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 982N | 5/9 Secondary reference U.S. Government activity |
| 982N | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 982N | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 2301190145 | 5/9 Secondary reference Atlas Copco Holyoke Inc |
| HL-19526 PIECE 115 | 5/9 Secondary reference U.S. Government activity |
NSN 5331-01-291-5636 is a O-Ring, manufactured by Wbf Co, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-291-5636 has 2 manufacturer part numbers on file: HL-19526 PIECE 115 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), 2301190145 (Wbf Co).
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.