Felder Soldering Grease is a flux for general soldering works on all metal surfaces with the exception of aluminium and stainless steels. The flux residues are corrosive and have to be removed thoroughly with warm water (resp. neutralisation, ultrasonic). Store in tightly closed containers protected against insolation and humidity. Simple-fix generally has to be stored in upright position! If stored correctly, at least 24 months durable.
- Flux Type: F-SW21