Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Solvay NOCOLOK Paint-F-Flux

Solvay NOCOLOK Paint-F-Flux is a water-based aluminum brazing flux suspension from Solvay’s NOCOLOK® series, formulated for precision coating applications. It enables uniform flux deposition on heat exchanger components prior to vacuum or controlled-atmosphere brazing, ensuring reliable joint formation without corrosion or residue issues.
  • solvay nocolok paint f flux_541190f5
  • solvay nocolok paint f flux_541190f5

Features Of Solvay NOCOLOK Paint-F-Flux

  1. Water-based, non-corrosive flux formulation compatible with aluminum brazing processes.

  2. Designed for precise, uniform application via spray, dip, or brush methods without clogging nozzles.

  3. Leaves minimal, non-hygroscopic residue after brazing—eliminating post-process cleaning requirements.

  4. Enables high joint strength and excellent capillary flow on complex heat exchanger geometries.

  5. ROHS-compliant and free of halides, heavy metals, and volatile organic compounds (VOCs).

Typical Applications Of Solvay NOCOLOK Paint-F-Flux

  1. Automotive HVAC condensers and evaporators.

  2. Aluminum radiators and oil coolers for commercial vehicles.

  3. Aerospace cabin heat exchangers requiring high reliability and low weight.

  4. Residential and industrial air-to-air heat recovery units (HRVs/ERVs).

  5. Brazed aluminum manifolds and headers in refrigeration systems.

Specifications Of Solvay NOCOLOK Paint-F-Flux

Chemical TypePotassium aluminum fluoride (KAlF₄)-based, water-dispersible flux
Product FormReady-to-use aqueous suspension (paste-like consistency)
AppearanceOff-white to light gray homogeneous slurry
Primary ApplicationsNOCOLOK® brazing of aluminum alloys (e.g., 3003, 4045, 6061) in controlled-atmosphere furnaces
Key FeaturesLow-temperature activation (580–620 °C), narrow melting range, excellent shelf stability
BenefitsReduced oxide disruption, consistent joint integrity, improved process repeatability
Storage ConditionsStore at 5–30 °C; protect from freezing and direct sunlight
Shelf Life12 months from date of manufacture when unopened and stored properly


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