Lucas-Milhaupt is showing its Sil-Fos 15 Rings designed for brazing copper tubular components for HVACR installation applications. The rings use a calculated alloy volume for use with standard size copper tube from 1/4 to 1-1/8 inch. The advantage of using these rings is consistent and repeatable joint quality while controlling alloy usage. Braze rings are easy to use, minimize waste, and provide visual verification of a complete, sound braze joint.