SUPPLY OF NATURAL RUBBER Visually Graded Types Prior to the invention of the TSR (Technically Specified Rubber) scheme, Natural Rubber was collected from small holders in various forms and separated into specific grades based on a visual inspection. Rubber sheets were then compressed into various sized bales. These grades are still best for certain applications and are now available packed similar to TSR type packaging. Ribbed Smoked Sheets (RSS) This material consists of deliberately coagulated*rubber sheets, completely dried using smoke. These sheets are then graded into three main grades according to their color, consistency and observed impurities. The purest is 1RSS S/ B, then 2RSS S/ B then 3RSS S/ B. Rss is sold in standard TSR pack (designated S/ B for small bales) consisting of a compressed bale of 33 1 / 3 or 35 Kilos wrapped in dispersible polyethylene or thick, strippable polyethylene. Crate size is 1200 or 1260 Kilos. RSS are used when extra tough (due to extensive