First, appearance
Smooth and round, uniform color, insulation rubber and copper core is not easy to peel off, poor rubber look thick, but when squeezed, the extrusion will become white, easy to fall off in the future cause leakage.
Second, eccentricity
The thickness of the rubber ring is the same, that is, if the copper core is in the middle of the wire, the eccentricity is low.
Third, flame retardant
Using a lighter to burn rubber, when the lighter leaves the wire, the wire should be extinguished automatically, and a small amount of white smoke is emitted. If the flame spreads, releasing a large amount of white smoke indicates that the rubber is of poor quality.
Wire and cable purchase
302 Slot Type Thread Insert,302 Self Tapping Threaded Inserts,302 Stainless Steel Inner Thread Inserts,302 Self-Tapping Threaded Inserts
Shenyang Helisert Technology Co., Ltd , https://www.helisert.com