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Sil-Sol 15- Silver-Phosphorous rods are copper rich, filler metal that is self-fluxing on copper by virtue of its phosphorus content.* It is used extensively on refrigeration units, air conditioning apparatus, electrical conductors, copper and brass pipe fittings, and other copper and brass equipment.
*(The self- fluxing property of this filler metals is effective on copper only. For copper-base alloys, such as brass or bronze, you will need the additional Flux)