Very little "rubber" is actual natural latex rubber. Balloons, certain hose, and some gloves are natural latex, as are about 40% of the material in tires. The rest is synthetic elastomer. EPDM and Buna-N/nitrile are probably the most common.
Teflon is not rubber, but viton is fluorinated elastomer, and it's used everywhere as well.
Teflon is not rubber, but viton is fluorinated elastomer, and it's used everywhere as well.