... voltage:600V 4.Flame retardant UL224 VW-1 5.UL Heat Shrinkable Tubes (RoHs) Shrink Ration: 2:1 , 3:1 ,4:1 ... ,6:1 PRODUCT DESCRIPTIONSilicone Rubber Heat-shrinkable Tube is applied for insulation purpose of electrical parts,power ... terminations etc.,resistance to weather,even in severest outdoor conditions as hot,cold,humidity or saline area ctc..Its operating temperature ...