The Lubricating Oil,vacuum Pump, cataloged under National Stock Number 9150-00-939-4945, is classified within Federal Supply Class 9150 (Oils and Greases: Cutting, Lubricating, and Hydraulic) of the Fuels, Lubricants, Oils, and Waxes group. The manufacturer of record is Dow Silicones Corporation. Government technical data includes 7 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9150-00-939-4945 |
| Primary Part Number | DC 704 |
| Item Name | Lubricating Oil,vacuum Pump |
| FSC / FSG | 9150 / 91 — Oils and Greases: Cutting, Lubricating, and Hydraulic |
| Manufacturer | Dow Silicones Corporation |
| Status | ACTIVE |
| Vapor Pressure Maximum Temp Rating | 20.0 FAHRENHEIT DEGF |
| Lubricant Type | ANY ACCEPTABLE |
| Basic Ingredient | ANY ACCEPTABLE |
| Fatty Material Type | ANY ACCEPTABLE |
| Quantity Within Each Unit Package | 1.000 GALLONS |
| Viscosity at Rated Temp | 39.00 MAXIMUM 77 DEG FAHRENHEIT |
| Service Characteristics | ANY ACCEPTABLE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| RHODORSIL 763 | Rhone-Poulenc Inc Chemicals Div (USA) |
| DC 704 PRIMARY | Dow Silicones Corporation (USA) |
| INVOIL 940 | Inland Vacuum Industries, Inc. Dba Inland Vacuum Industries Inc (USA) |
| DC 704 DIFFUSION PUMP FLUID,1GA | Dow Silicones Corporation (USA) |
| Reference | Meaning |
|---|---|
| DC 704 DIFFUSION PUMP FLUID | 5/1 Secondary reference Dow Silicones Corporation |
NSN 9150-00-939-4945 is a Lubricating Oil,vacuum Pump, manufactured by Dow Silicones Corporation, classified under FSC 9150, Oils and Greases: Cutting, Lubricating, and Hydraulic. Status: active.
NSN 9150-00-939-4945 has 4 manufacturer part numbers on file: RHODORSIL 763 (Rhone-Poulenc Inc Chemicals Div), DC 704 (Dow Silicones Corporation), INVOIL 940 (Inland Vacuum Industries, Inc. Dba Inland Vacuum Industries Inc), DC 704 DIFFUSION PUMP FLUID,1GA (Dow Silicones Corporation).
1 possible match (shared part number, not a government interchangeability claim): 9150-01-542-4739. Verify interchangeability with system specifications before substitution.
Key specifications for DC 704: Vapor Pressure Maximum Temp Rating: 20.0 FAHRENHEIT DEGF; Lubricant Type: ANY ACCEPTABLE; Basic Ingredient: ANY ACCEPTABLE; Fatty Material Type: ANY ACCEPTABLE. 7 specifications are documented in the U.S. Government catalog.
Hazardous per DLA record (HMIC Y). 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.