Synthetic rubber and factice derived from oils, in primary forms or in plates, sheets or strip; mixtures of any product of heading 4001 with any product of this heading, in primary forms or in plates, sheets or strip
Butadiene rubber "br", in primary forms or in plates, sheets or strip
Ethylenepropylene diene rubber "epdm", nonconjugated, in primary forms or in plates, sheets or strip
Isoprene rubber "ir", in primary forms or in plates, sheets or strip
Mixtures of natural rubber, balata, guttapercha, guayule, chicle or similar types of natural rubber with synthetic rubber or factice, in primary forms or in plates, sheets or strip