Fengfan Aluminum Anodizing Chemicals Liquid Sealing Agent For Color Dyes Anodized Seal 147

ADVANTAGES

1. Compared with the traditional sealing process, the work piece is easy to rinsing, no residue;

2. No film before rinsing, particularly suitable for automatic production lines;

3. Rarely dye color bleaching;

4. Product appearance: Dark green acidic liquid.

 
OPERATING CONDITIONS

PACKAGE

25 kg plastic drum



Agent Composition and Behavior
SEAL‑147 is a nickel‑acetate system liquid sealing agent formulated for use with color dyes on anodized aluminum and aluminum alloy surfaces. It appears as a dark green acidic liquid, and is designed to be easy to rinse, leaving no residue after sealing. Its behavior makes it especially suitable where dye color retention is important, reducing dye bleaching. Under anodizing aluminum process conditions, SEAL‑147 operates at medium‑to‑high temperatures and maintains chemical stability while sealing dye‑infused porous anodic films to protect their color integrity. The agent’s acid nature allows it to react with the anodized oxide pores to form a thin sealing layer that helps block moisture, improves surface hardness slightly, and enhances overall finish durability in dyed parts subjected to handling or cleaning.

Operating Conditions and Usage Parameters
The typical working concentration of SEAL‑147 is between 20‑30 ml per liter, with the best performance at about 25 ml/L. Temperature range for sealing is 70‑100 °C, ideally between 80‑95 °C. Time required is approximately 0.5 to 2 minutes per micron of oxide thickness, with around 1 minute per micron being standard. The pH of solution should be in the 5.0‑6.0 range, optimal around 5.0‑5.5. Weak air stirring is suggested, and filtration of the bath using acid‑resistant, heat‑resistant filters helps maintain clarity. SEAL‑147 is supplied in packaging such as 25 kg plastic drums. These parameters allow integration into existing finishing lines or aluminum anodizing service facilities with standard equipment, avoiding need for unusually high temperature or extreme pH adjustments.

Color Stability and Finish Enhancement
When using SEAL‑147, automatic production lines benefit from its rinse‑friendly nature: the sealed parts are easy to rinse, and no film forms before rinsing, which avoids surface defects. Rare dye color bleaching is reported, meaning dyes used during anodizing retain more vividness under sealing. Surfaces treated with SEAL‑147 show minimal color loss, preserving brightness and finish smoothness, which is important for parts finished via aluminum anodizing service offering color customization or visible aesthetic components. Finish clarity and uniformity are improved over less advanced sealing agents. The sealing effect also aids in reducing visual mottling under light, preserves hue contrast in colored anodized parts, and helps protect against mild abrasion or handling damage after sealing.

 

Product Advantages

Design and Structural Benefits for Aluminum Anodizing Lines
Fengfan’s sealing agent features a robust nickel acetate system optimized for integration into conventional aluminum anodizing kits and finishing tanks constructed from SUS304 or SUS316 stainless steel. Its chemical formulation ensures compatibility with existing anodizing aluminum process equipment, minimizing retrofit requirements. The liquid’s acidic pH and dark green coloration improve process control and monitoring, enhancing operational safety and precision. The product’s packaging in 25 kg plastic drums supports bulk industrial usage, facilitating efficient storage and handling aligned with manufacturing scale demands in anodized aluminum production lines.

Performance, Usability, and Industrial Value
The product delivers consistent enhancement in color retention and surface gloss due to its concentrated formula and precise immersion time recommendations. Its easy-rinse characteristic accelerates production cycles by reducing cleaning downtime and preventing residue buildup, thereby increasing line throughput. The sealing agent minimizes dye bleaching risks under tightly controlled parameters, supporting long-term durability of anodized aluminum finishes. This performance reliability translates into greater ROI for manufacturers requiring quality assurance in anodizing aluminum process and satisfactory color outcomes for end-users.


 
Use Scenarios

Color Finishing of Decorative Panels
Panels used for architectural decoration, signage, or consumer appliances often have anodized aluminum finishes with colored dyes. SEAL‑147 is suitable for sealing these finishes, especially after anodizing and dyeing steps, to stabilize color and surface gloss. When used in aluminum anodizing kit or full line dye capability, this sealing agent ensures that decorated surfaces retain intended hue and sheen even after exposure to light or moisture. In outdoor display panels, signage exposed to sun, humidity, or occasional cleaning, SEAL‑147 helps maintain gloss, reduce water‑spotting, and preserve color contrast.

Automatic Production of Dye‑Anodized Parts
High‑volume lines anodizing aluminum parts with dye often require consistent, repeatable sealing. SEAL‑147 supports automatic or semi‑automatic sealing baths by offering easy rinse, low bleaching, and relatively stable operating parameters. For service providers offering aluminum anodizing service, this means lower scrap, more uniform results, and less color variation across batches. Also suitable for parts processed in aluminum anodizing kit settings where surfaces are color anodized in batches and then sealed in shared baths, reducing cross‑batch color drift.

Finish Protection for Display and Consumer Components
Items such as decorative trims, consumer electronics faces, or display hardware that use anodized aluminum with visible color and texture benefit from SEAL‑147 sealing. It helps protect dyes against fading, preserves smooth surfaces, and improves resistance against staining or dulling. This use is especially relevant in environments where parts are handled, cleaned, or exposed to air and humidity post‑finishing. The sealing helps in resisting abrasion from handling, retaining shine after cleaning, and reducing tone variation on colored surfaces subjected to everyday wear.


 
About Us

Wuhan Fengfan International Trade Co., Ltd is a wholly owned subsidiary of Wuhan Fengfan Electrochemical Technology Co., Ltd, founded in 1984. The company specializes in R&D, manufacture, and export of surface finishing chemicals including anodizing chemicals, color dyes, conversion coatings, pretreatment agents, and sealing agents. Its product offerings support workflows such as aluminum anodizing service, finished anodized aluminum surfaces, and alternatives to or complements with alodine coating where color preservation is vital.

Fengfan maintains facilities with lab‑scale and pilot‑scale capacities, quality‑control processes, and large‑volume manufacturing tailored to chemical treatments for metal finishing lines. Its sealing agents including SEAL‑147 are tested for rinse‑behavior, residue absence, dye stability, and compatibility with finishing kits. The company supplies customers globally, including users of aluminum anodizing kits and industrial lines requiring color‑stable, corrosion‑resistant finishes. It also supports customers needing decorative finish safety, finishing consistency, and aesthetic retention under demanding environmental exposure.

 

FAQ

What appearance does SEAL‑147 sealing agent have?
It is a dark green acidic liquid designed for color dyes on anodized aluminum, easy to rinse and leaving no residue. Its dark green shade signals readiness and contrast during application and helps operators observe coverage before rinsing.

What concentration should be used for SEAL‑147?
Use about 20‑30 ml per liter, with 25 ml/L being best for sealing color‑dye anodized surfaces as part of aluminum anodizing process. That ensures balanced sealing without over‑acid damage to dye layers.

At what temperature and time is SEAL‑147 most effective?
The sealing works between 70‑100 °C, ideally 80‑95 °C, with about 0.5‑2 minutes per micron thickness, commonly 1 minute per micron. Consistent time and temperature help retain dye color and surface gloss in aluminum anodizing service operations.

Will SEAL‑147 damage dye colors?
Dye color bleaching is rare when using SEAL‑147 under correct temperature and time settings; color retention is strong for anodized aluminum finished with SEAL‑147. Proper rinsing and bath maintenance further help avoid color fade or staining.

Is SEAL‑147 compatible with alodine coated parts?
SEAL‑147 is formulated for color dyed anodized films, not for conversion coatings like alodine coating, but could be used in finishing workflows that include anodizing instead of or in addition to alodine. It supports anodized aluminum workflows rather than replacing alodine in those contexts.


Order SEAL‑147 now to seal your color‑dye anodized finishes with professionalism in your aluminum anodizing service workflows and protect finish quality!