Rubber trees, specifically the Hevea brasiliensis species, …

Rubber trees, specifically the Hevea brasiliensis species, primarily produce latex, a white milky liquid found in the bark that contains approximately 30% rubber. This latex is harvested through a process called tapping, where incisions are made in the bark to collect the sap, which is then processed into natural rubber used for products like tires, gloves, and hoses.
In addition to latex, rubber trees produce several other valuable byproducts:
Seeds: The trees produce fruits containing seeds that yield para rubber seed oil, a pale yellow oil used in making soap, paint, varnish, and torches.
Wood: The soft wood of the tree is utilized in construction and papermaking.
Flowers and Nectar: The cream-colored or yellow flowers produce nectar that bees use to make honey.
While the Hevea brasiliensis is the primary commercial source, other plants like the Castilla elastica (historically used by the Olmecs) and shrubs like Guayule also produce natural rubber, though they account for a much smaller share of global production.