4 Oz. Jar Water Soluble Regular Flux Paste

LA-CO Regular Flux Paste – Technical Product Information

LA-CO Regular Flux Paste is a water-soluble, non-acid flux designed for professional soldering applications across plumbing, HVAC, and metal fabrication industries. This formulation ensures consistent solder flow and strong metallurgical bonding on ferrous and non-ferrous materials. It is engineered to meet professional standards for reliability, joint integrity, and process efficiency in both field and shop environments.

Technical Specifications

• Product Code: 022104 LACOI FLUX SOLDERING PASTE N/ACID 4OZ 367
• Manufacturer: LA-CO / Markal
• Form: Paste
• Container Size: 4 oz Jar
• Type: Non-Acid, Water-Soluble Flux
• Color: Yellowish to White
• Odor: Faint
• pH: 6.5 – 7
• Flash Point: >204°C
• Composition:
  • 10–20% Ethanolamine Hydrochloride
  • 10–20% Polyethylene Glycol
  • 10–20% Poloxamer
  • 5–15% Ammonium Chloride
  • 0.1–1% 2,6-Di-tert-butyl-4-methylphenol (BHT)
  • 0–1% Oleic Acid
  • 0.001–1% Sodium Hydroxide
• Applicable Metals: Brass, Copper, Galvanized Iron, Lead, Mild Steel, Malleable Iron, Nickel, Silver, Tin, Terne Plate, Zinc

Professional Summary

Developed for demanding industrial use, LA-CO Regular Flux Paste delivers consistent solder flow characteristics, ensuring robust, leak-free joints across a wide range of metals. The formulation maintains stability under heat, providing predictable performance with minimal post-solder cleanup. Its non-corrosive, water-soluble nature facilitates efficient workflow integration and long-term joint reliability. Proven in millions of professional installations, this flux is a standard in mechanical, plumbing, and fabrication operations requiring repeatable, high-quality soldering results.