The Heat Transfer Fluid, cataloged under National Stock Number 6850-01-517-3988, is classified within Federal Supply Class 6850 (Miscellaneous Chemical Specialties) of the Chemicals and Chemical Products group. The manufacturer of record is Koehler Instrument Company, Inc.. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6850-01-517-3988 |
| Primary Part Number | 355-001-002 |
| Item Name | Heat Transfer Fluid |
| FSC / FSG | 6850 / 68 — Miscellaneous Chemical Specialties |
| Manufacturer | Koehler Instrument Company, Inc. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 015173988 | Addev Materials Aerospace Ltd (GBR) |
| 355-001-002 PRIMARY | Koehler Instrument Company, Inc. (USA) |
| PMX-200, 100 CST PRIMARY | Dow Silicones Corporation (USA) |
| Reference | Meaning |
|---|---|
| DC 200, 100 CST | 5/9 Secondary reference Dow Silicones Corporation |
NSN 6850-01-517-3988 is a Heat Transfer Fluid, manufactured by Koehler Instrument Company, Inc., classified under FSC 6850, Miscellaneous Chemical Specialties. Status: active.
NSN 6850-01-517-3988 has 3 manufacturer part numbers on file: 015173988 (Addev Materials Aerospace Ltd), 355-001-002 (Koehler Instrument Company, Inc.), PMX-200, 100 CST (Dow Silicones Corporation).
Key specifications for 355-001-002: Special Features: SILICONE FLUID-CLIEAR HEAT TRANSFER FLUID WITH HIGH OXIDATION RESISTANCE AND LOW VOLATILITY. RECOMMENDED FOR CONSTANT TEMPERATURE BATH APPLICATIONS ABOVE 240 DEG F; BOILING POINT 450 DEG F; COLOR: COLORLESS; DEGF. 0 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.