This Technical Report contains definitions of terms currently used in the roller covering industry. It does not include general rubber industry terms, e.g. vulcanization, shore hardness, etc., for which reference should be made to ISO 1382; nor does it include mechanical engineering terms such as axis, web, etc. NOTES 1 When a term has one or more synonyms, the synonymous terms follow the preferred term. 2 For the purposes of the definitions in this Technical Report,"roller" is treated as a synonym for "rubber- or plastics-covered roller". Therefore care should be taken to ensure that the word is not used out of context, because it does have other meanings. 3 For the purposes of the definitions in this Technical Report, "rubber" as defined in ISO 1382 is treated as a synonym for "soft rubber" or "hard rubber" or "ebonite". The term "rubber" can be replaced by "plastics" as defined in ISO 472 or "elastomer" without change in meaning. It will be understood that the properties of a roller cover vary depending on its composition and surface finish, and therefore it should not be assumed that rubbers, ebonite and plastics are interchangeable.