This is an acid free solder that contains a flux in the core of the solder.
Multi strand tinned copper wire.
The best solder to use for tinning stranded copper wire is electrical grade rosin core solder.
Tinned copper multistrand wire in a black cotton and oil dielectricum among enthusiasts recognised as the go to wire for real sound.
Never use solder that contains acid which can damage the wire or its insulation.
Tinned wire is more expensive than its non tinned counterpart but it lasts significantly longer and is easier.
Rubber covered with a fabric perhaps nylon though earlier fabric covered wires also may have used asbestos cloth.
Acid core solder is intended for use in plumbing applications.
You will note the two layers of insulation.
Insulations are available in various ul styles and color coded pvc or with a chrome gray pvc outer jacket with temperature ranges from cm 20 c to 80 c 4 f to 176 f and ul 40 c to.
Tinned copper wire is a type of copper wire coated in a thin layer of tin to protect the copper from corrosion that would decrease the wire s efficiency in humid or rainy climates high heat environments and in certain types of soil.
16 gauge silicone wire spool 50 feet ultra flexible high temp 200 deg c 600v 16 awg stranded wire with 252 strands of tinned copper wire 25 ft black and 25 ft red wire for model battery by milapeak 4 6 out of 5 stars 104.
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