The Bushing Breakdown Seal, cataloged under National Stock Number 4320-01-188-8628, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Div Epd. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-188-8628 |
| Primary Part Number | 970021-00PH |
| Item Name | Bushing Breakdown Seal |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Status | ACTIVE |
| General Characteristics Item Description | STL |
| 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 |
|---|---|
| 970021-00PH PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| RY-167693 ITEM 28 | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| RY-167693 ITEM 28 | 5/9 Secondary reference U.S. Government activity |
| RY-167693 | D/9 Drawing number reference only U.S. Government activity |
| 970021-00PH | 3/9 Design control — primary reference U.S. Government activity |
NSN 4320-01-188-8628 is a Bushing Breakdown Seal, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-188-8628 has 2 manufacturer part numbers on file: 970021-00PH (Curtiss-Wright Electro-Mechanical Corporation Div Epd), RY-167693 ITEM 28 (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
3 possible matches (shared part number, not a government interchangeability claim): 5365-01-188-8629, 4320-01-188-8753, 4320-01-188-8754. Verify interchangeability with system specifications before substitution.
Key specifications for 970021-00PH: General Characteristics Item Description: STL. 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.