Crestgood 661-004 Self-cleaning Solder Flux 4 Oz Tan

Product Description

The Crestgood 661-004 is a 4 oz self-cleaning solder flux in a paste form with a light brown tan color. It is designed for use in plumbing, HVAC, and electrical soldering applications where speed and clean results matter. Trade professionals rely on solder flux to prepare metal surfaces for soldering by removing oxidation and allowing solder to flow and bond properly. The Crestgood 661-004 takes this a step further with a self-cleaning formula that eliminates the need for post-solder burnishing or scrubbing. Once heat is removed from the joint, the cleaning action stops automatically. This controlled cleaning behavior means the metal surface is protected from over-etching, and copper pipe will not turn green after the joint cools. The paste form makes it easy to apply precisely to fittings, connectors, and pipe ends before soldering. It stays in place during application and does not run or drip, which is especially useful when working in tight spaces or on vertical runs. The relative density of 1.1 gives it a stable consistency that holds well on vertical and overhead surfaces. The flashpoint is greater than 204 degrees Celsius, making it safe for use with standard soldering torches used in copper pipe work. The low odor formula is a practical advantage when working indoors, in crawl spaces, mechanical rooms, or other enclosed areas where ventilation may be limited. HVAC technicians, plumbers, and electricians working with copper fittings will find this flux compatible with standard lead-free and tin-based solders. It is an economical choice that saves time on every job by cutting out the cleaning step entirely.

• Self-cleaning formula eliminates the need to burnish or scrub metal after soldering
• Cleaning action stops when heat is removed, preventing over-etching and green discoloration on copper
• Low odor paste with a flashpoint greater than 204 degrees Celsius, suitable for enclosed work areas

Product Highlights

The Crestgood 661-004 self-cleaning solder flux is a time-saving, economical paste flux for copper pipe and fitting applications. Its controlled cleaning action and low odor make it a practical choice for trade professionals working in a wide range of conditions.

Product Information

Standard Information

• Brand: CRESTGOOD
• Manufacturer Part Number: 661-004

Technical Specifications

• Product Type: Flux
• Form: Paste
• Net Weight: 4 oz
• Color Category: Neutrals
• Color Name: Light Brown / Tan
• Relative Density: 1.1
• Flashpoint: Greater than 204 degrees Celsius
• Odor: Low odor