Chloroprene rubber latex classifies under 400241, while solid non-latex primary forms, plates, sheets, and strip of chloroprene (neoprene) rubber classify under 400249. The physical state at the time of importation determines the correct subheading.

Yes. Several synthetic rubber types, particularly SBR and certain specialty grades, have been subject to antidumping or countervailing duty proceedings from specific origins. Importers should check the current scope of any active orders against the specific polymer type and country of origin before entry.