The Ring,valve Piston, cataloged under National Stock Number 4820-01-628-7625, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Brake Supply Company, Inc. Dba Perfection Hydraulics. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-628-7625 |
| Primary Part Number | 405941 |
| Item Name | Ring,valve Piston |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Brake Supply Company, Inc. Dba Perfection Hydraulics |
| Status | ACTIVE |
| Material | RUBBER SYNTHETIC |
| 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 |
|---|---|
| 405941 | Parker-Hannifin Corporation Div Hydraulic Accumulator Division (USA) |
| 405941 PRIMARY | Brake Supply Company, Inc. Dba Perfection Hydraulics (USA) |
| 862441 ITEM NO 8 | Parker-Hannifin Corporation Div Hydraulic Accumulator Division (USA) |
| S9514-C4-MMA-010 FIG 7-19-16 | Naval Sea Systems Command (USA) |
NSN 4820-01-628-7625 is a Ring,valve Piston, manufactured by Brake Supply Company, Inc. Dba Perfection Hydraulics, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-628-7625 has 4 manufacturer part numbers on file: 405941 (Parker-Hannifin Corporation Div Hydraulic Accumulator Division), 405941 (Brake Supply Company, Inc. Dba Perfection Hydraulics), 862441 ITEM NO 8 (Parker-Hannifin Corporation Div Hydraulic Accumulator Division), S9514-C4-MMA-010 FIG 7-19-16 (Naval Sea Systems Command).
Key specifications for 405941: Part Name Assigned by Controlling Agency: ANTI-EXTRUSION RING; End Item Identification: ASSY ONE GALLON 3000 PSI PULSETONE W.S; Material: RUBBER SYNTHETIC. 1 specification is 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.