Hard rubber concerns the material used for pen barrels, caps, and other parts of the pen. The rubber is derived from natural latex resin, vulcanized - boiled with sulfur or other reagents to form a solid, resilient, lightweight plastic-like material that can be machined into shape,

however, it can tarnish or dull with age and exposure. This hard rubber is also called vulcanite or ebonite.

-see also:
"Hard rubber" is in the HS Code "4017.00"
  - Hard rubber (for example, ebonite) in all forms, including waste and scrap; articles of hard rubber.

Ref: 120717/2006-10-01

Other Database Pages Exist for this Phrase:
Hard (Hard is a term used to refer to the taste of wine ...)
Rubber (Rubber refers to a material that is capable of ...)
Vulcanite (Vulcanite is characterized as a dark-colored ...)

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