… example, ebonite) in all forms, including waste and scrap; articles of hard rubber. …
Explanatory notes
… example, ebonite) in all forms, including waste and scrap; articles of hard rubber. Hard rubber (for example, ebonite) … silica. In the absence of fillers, pigments and cellular structures, hard rubber is a hard, brownish‑black (or sometimes red) material which is relatively inflexible and …