Increase the voltage and your natural resistance also decreases, putting you more at risk. I've heard of electricians who have died or had their skin across their chest removed when holding 220 VAC in both hands, usually why you want to keep one hand in your pocket. This is a rather large assembly to field service. Latex is the milky sap of the commercial rubber tree, Hevea Brasiliensis. Latex contains hundreds of proteins, including enzymes that are involved in the biosynthesis of the rubber molecules.
Most natural rubber is produced in Africa and South Asia.
Trees are tapped for latex, by cutting a spiral groove in the bark and placing a spout and collection cup, containing ammonia or some other preservative, at the bottom. By centrifugation a concentrated product is obtained. Additional chemicals, such as accelerators, and antioxidants are added for strength, stretch and durability. Trans-polyisoprene is a harder natural polymer. Gutta-percha is an example.