The Scale Prevention Compound, cataloged under National Stock Number 6850-01-531-4517, is classified within Federal Supply Class 6850 (Miscellaneous Chemical Specialties) of the Chemicals and Chemical Products group. The manufacturer of record is Wilhelmsen Ships Service, Inc. Government technical data includes 3 specifications, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6850-01-531-4517 |
| Primary Part Number | GAMAZYME TDS |
| Item Name | Scale Prevention Compound |
| FSC / FSG | 6850 / 68 — Miscellaneous Chemical Specialties |
| Manufacturer | Wilhelmsen Ships Service, Inc |
| Status | ACTIVE |
| General Characteristics Item Description | BOX OF 5 KILOGRAMS, CONSISTING OF 100 EACH 50 GRAM SACHETS KG |
| Supplementary Features | SUITABLE FOR USE IN ALL MARINE SANITARY AND SEWAGE TREATMENT SYSTEMS; INTRODUCES SAFE BACTERIA INTO THE SANITARY SYSTEM TO REDUCE ORGANIC WASTE THAT LINES THE PIPE SYSTEM AND REMOVES ORGANIC DEPOSITS; DIGESTS GREASE, FATS, STARCH AND OTHER ORGANIC MATERIALS FOUND IN TOILET SYSTEMS |
| Nondefinitive Spec/std Data | 1 CLASS AND 1 TYPE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| GAMAZYME TDS PRIMARY | Wilhelmsen Ships Service, Inc (USA) |
| Reference | Meaning |
|---|---|
| MIL-PRF-32217 CL1TY1 | 5/1 Secondary reference U.S. Government activity |
| 656-712042 | 5/9 Secondary reference Wilhelmsen Ships Service, Inc |
| MIL-PRF-32217 | 4/1 Identification reference U.S. Government activity |
| 656-624304 | 5/9 Secondary reference Wilhelmsen Ships Service, Inc |
NSN 6850-01-531-4517 is a Scale Prevention Compound, manufactured by Wilhelmsen Ships Service, Inc, classified under FSC 6850, Miscellaneous Chemical Specialties. Status: active.
NSN 6850-01-531-4517 has 1 manufacturer part number on file: GAMAZYME TDS (Wilhelmsen Ships Service, Inc).
1 possible match (shared part number, not a government interchangeability claim): 6850-01-574-8506. Verify interchangeability with system specifications before substitution.
Key specifications for GAMAZYME TDS: General Characteristics Item Description: BOX OF 5 KILOGRAMS, CONSISTING OF 100 EACH 50 GRAM SACHETS KG; Supplementary Features: SUITABLE FOR USE IN ALL MARINE SANITARY AND SEWAGE TREATMENT SYSTEMS; INTRODUCES SAFE BACTERIA INTO THE SANITARY SYSTEM TO REDUCE ORGANIC WASTE THAT LINES THE PIPE SYSTEM AND REMOVES ORGANIC DEPOSITS; DIGESTS GREASE, FATS, STARCH AND OTHER ORGANIC MATERIALS FOUND IN TOILET SYSTEMS; Nondefinitive Spec/std Data: 1 CLASS AND 1 TYPE; Special Features: BIOLOGICALLY ACTIVE ENZYME, ACIDIC, BIODEGRADABLE, LOW FOAMING CLEANING FOR DESCALING ORGANIC AND INORGANIC DEPOSITS FROM TOILET BOWLS, FITTINGS AND PIPE WORK. 3 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.