Namely, vulcanized rubber is more resilient than natural rubber. This makes it less likely to decompose in the environment. This means that vulcanized rubber will sit in landfills for years after it is thrown away. That being said, there is evidence that vulcanized rubber is eventually biodegradable.

What rubbers are biodegradable?

It is generally noted that natural latex rubber is biodegradable as is claimed by numerous products and manufacturers: Natural rubber latex gloves can be disposed of by either landfill or incineration without environmental damage.

Are rubber tires biodegradable?

Because tires are highly durable and non-biodegradable, they can consume valued space in landfills. ... Aside from use as fuel, the main end use for tires remains ground crumb rubber.