… Hard rubber (for example, ebonite) in all forms, including waste and scrap; articles of hard …
Explanatory notes
… 40.17 ‑ Hard rubber (for example, ebonite) in all forms, including waste and scrap; articles of hard … Hard rubber may also contain pigments and high levels of fillers, for example, coal, clays and silica. In the absence of fillers, pigments and cellular structures, hard rubber is a hard, brownish‑black …