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LW-99 Nickel-free and Fluoride-free Medium Temperature Sealing Additive(Liquid)
Product overview
    LW-99 is a kind of high concentration colorless or light amber liquid which has excellent sealing effect for aluminum oxidation film. It does not contain heavy metals, which not only will solve the problems caused by heavy metal in waste water treatment process, but also can avoid aluminum surface greenish phenomenon which caused by the oxide film absorbing nickle salt during the sealing period. LW-99 is applicable to the transparent film, polishing, electrolytic coloring film sealing and it has the advantages of simple operation, environmental protection, water-saving, free of treatment to fluoride and nickel irons in waste water processing which can be cost-saving.
Features of LW-99:
1) Environmental Protection: Free of nickel, fluoride and heavy metal;
2) Performance: high corrosion resistance and strong light resistance;
3) Odorless: No smell;
4) Innovation:LW-99 is the initiate in China and opens a new era of nickel-free and fluoride-free sealing products;;
5) Stability: The environmental aging tests shows that the profiles with LW-99 sealing exposure in the hot sun by several years , their appearances will be very stable (almost no change).
LW-99 compares to the sealing additive containing nickle.
Items Specifications Chemicals LW-99 Nickel-free and Fluoride-free Medium Temperature Sealing Additive Sealing additive containing nickle
Environmental protection Free of nickel, fluoride and heavy metal;Be in conformity with the EU RoHS directives Contains nickel, fluoride
Environmental protection treatment costs Less than RMB5 per tone waste water RMB50-60 per tone waste water
Operation Simple, just need one kind of additive for bath make-up It usually takes two or more additives for bath make-up
Adjustment and maintenance Only need to replenish LW-99 to meet the production requirement, and the solution can adjust PH automatically PH needs to be adjusted frequently,which will easily make the solution become muddy and aging
Bath Make-up:
Name Quantity Unit


should apply special additive for new bath make-up

50 g/L
Running Water or Deionize Water Balance

Pure Water

Operating Conditions:
Name Quantity Unit
LW-99 50 g/L
PH 6.7±0.2
Time 1-1.5 μm/min


Solution Maintenance:
1) Analyze the concentration of LW-99 and PH daily. Control them in the required range;
2) The long-term production using of heating device will cause a little precipitations. Thus, it is suggested to equip the filtering device.
Packaging and Storage:
Package: Plastic barrel (25kg/barrel)
Storage: Suggested to store in cool, dry and well ventilated place; away from fire and heat source.

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