SY-335 Oxide Film Dyeing and Sealing Agent

SY-335 aluminum oxide film dyeing and sealing agent is a solid powder that effectively inhibits the leaching of organic dyes during the sealing process, thereby accelerating the pore‑closing rate of the anodized film. Its unique formulation enhances sealing quality, improves surface smoothness, and extends service life.

SY-333 room-temperature nickel-free sealant

SY-333, a room‑temperature, nickel‑free sealing agent, is a concentrated liquid formulation that delivers excellent pore sealing for aluminum anodized films at 35–43°C. This product is free of heavy metals, which not only simplifies wastewater treatment by eliminating the need to manage heavy metal contaminants but also prevents the greenish discoloration often caused by nickel‑salt adsorption onto the oxide layer during conventional nickel‑based sealing—since SY‑333 itself is colorless. Moreover, it is suitable for sealing both transparent anodized films and electrolytically colored anodized coatings. With proper maintenance and process control, the SY‑333 working solution can remain in service for extended periods without requiring replacement.

SY-332 Room-Temperature Trivalent Chromium Sealer

SY-332 ambient‑temperature trivalent chromium sealing agent is a pale green liquid used to seal the pores of dyed anodic oxide films. Based on fluoride as the primary salt, it contains no nickel or cobalt and incorporates trivalent chromium, enabling rapid (5 μm/min) and effective pore sealing even at low fluoride ion concentrations. It also features stable pH, easy maintenance, and low consumption. After sealing, it does not impair surface luster, enhances the film’s corrosion resistance and anti‑contamination performance, delivers excellent sealing results, and does not produce white frosting. The bath can be operated at room temperature, reducing heating energy consumption, while effluent treatment is straightforward, meeting environmental protection requirements.

SY-331 High-Corrosion-Resistant (Organic) Sealer

SY-331 high‑corrosion‑resistant (organic) sealer is a liquid dispersion of organic polymers, containing silica and nonionic surfactants, and free of chromates; it is a colorless liquid. It forms a dense protective film on metal conversion coatings and electroplated surfaces, providing exceptional corrosion resistance and discoloration prevention, while being easy to use and simple to apply. It is suitable for aluminum anodized films, chemical conversion coatings, and various protective plating layers, such as trivalent blue‑white passivation, non‑hexavalent yellow multicolor passivation, and trivalent black passivation; it can also be used for hexavalent yellow multicolor passivation and olive‑green passivation. The product creates a transparent organic anti‑corrosion protective layer and enhances the performance of these passivation films in neutral salt spray tests, delivering 100–200 hours of protection.

SY-330 Room-Temperature Rapid Sealer

SY-330 room‑temperature rapid sealing agent is a pale green solid containing nickel salts, cobalt salts, and surfactants. It is used for the fast sealing of pores in aluminum oxide films, achieving a sealing rate of 0.8–1 μm/min. This product effectively inhibits the leaching of organic dyes during the sealing process, enhances sealing quality, improves surface smoothness, and offers a long service life. Anodized layers treated with SY‑330 exhibit excellent corrosion resistance, and even thick anodic oxide films show no greenish discoloration. The formulation features a broad processing window, easy bath control, outstanding resistance to impurity ions, strong acid–base buffering capacity, and minimal need for frequent pH adjustments, ensuring good stability. For dyed profiles, it prevents color fading, while silver‑white aluminum extrusions retain their original hue after sealing.