Model # CS-FX4

Ruby Fluid Liquid Flux

Product Overview
Superior RubyFluid is a water-soluble flux formulated for soldering. The flux is a non-fuming, self-cleaning soldering flux. The flux exerts a strong scavenging action to remove oxide coatings and other impurities from the metal surface to produce strong joints. Pre-cleaning is not necessary under most conditions.
QTY.   add to cart    ADD TO CART


Rubyfluid has been giving superior results for plumbers and workers in brass, copper, tin, steel and stained glass since 1907.

A soldering flux that is easy to use and produces strong, neat, and durable joints.

Rubyfluid adheres quickly and stays where you put it. Reduces amount of solder used by causing solder to flow in a thin film.

Manufactured from the finest materials available.


The following products are related (similar model but different specifications, etc.) to Model CS-FX4 featured on this page:

Model Product NamePrice 
CS-FX5Ruby Fluid Liquid Flux (Pint)$20.00Add to Cart


Specific Gravity1.278 @ 20ºC
pH Range3.78 @ 20ºC
SolderabilityPasses on Copper
AppearanceClear Red Liquid
Net Volume2 oz (59 ml)
Country of OriginUS
Harmonization Code:3810.90.0000
RoHS CompliantYes
Safety Data SheetsDownload
Warranty PolicyDetails
American Beauty Soldering Tools
Need Help? Bored? Call 1-800-550-2510
2000-2024 American Beauty Tools