Rubber

Rubber means the sum of the materials (for example, natural rubber, synthetic rubber, carbon black, oils, sulfur) that are combined in specific formulations for the sole purpose of making rubber tires or components of rubber tires.

Source

40 CFR § 63.6015

Scoping language

Terms used in this subpart are defined in the Clean Air Act and in 63.2, the General Provisions. The following are additional definitions of terms used in this subpart: