The Fluid,backfill, cataloged under National Stock Number 6850-01-168-2698, is classified within Federal Supply Class 6850 (Miscellaneous Chemical Specialties) of the Chemicals and Chemical Products group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6850-01-168-2698 |
| Primary Part Number | 5268354 |
| Item Name | Fluid,backfill |
| FSC / FSG | 6850 / 68 — Miscellaneous Chemical Specialties |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| General Characteristics Item Description | CONSISTS OF 55 PERCENT ETHYLENE GLYCOL AND 45 PERCENT DE-IONIZED WATER; IT HAS A FREEZE POINT OF MINUS 51.6 DEGREE F, BOILING POINT OF PLUS 227.4 DEGREES F AND THE SPECIFIC GRAVITY IS 1.083-1.089 AT 20/20 DEGREES C |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 5268354 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| FLUID 55-C | 5/9 Secondary reference U.S. Government activity |
| PM6175 UCARTHERM | 5/9 Secondary reference U.S. Government activity |
| PM5819 | 5/9 Secondary reference U.S. Government activity |
NSN 6850-01-168-2698 is a Fluid,backfill, manufactured by Naval Sea Systems Command, classified under FSC 6850, Miscellaneous Chemical Specialties. Status: active.
NSN 6850-01-168-2698 has 1 manufacturer part number on file: 5268354 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 6625-01-330-4670. Verify interchangeability with system specifications before substitution.
Key specifications for 5268354: General Characteristics Item Description: CONSISTS OF 55 PERCENT ETHYLENE GLYCOL AND 45 PERCENT DE-IONIZED WATER; IT HAS A FREEZE POINT OF MINUS 51.6 DEGREE F, BOILING POINT OF PLUS 227.4 DEGREES F AND THE SPECIFIC GRAVITY IS 1.083-1.089 AT 20/20 DEGREES C. 1 specification is 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.