Spot rubber continued to rule flat on Tuesday. RSS 4 finished unchanged at ₹116 a kg as reported by the traders. The grade weakened to ₹116 (₹116.50) and ₹113 (₹113.50) respectively, according to the Rubber Board and the dealers. November futures slid to ₹117.65 (₹118.20), December to ₹119.90 (₹120.42) and January to ₹122.50 (₹122.74) on the National Multi Commodity Exchange (NMCE). RSS 3 (spot) firmed up to ₹114.13 (₹112.63) at Bangkok. October futures improved to ¥172.4 (₹110.19) on the Tokyo Commodity Exchange. Spot rubber rates ₹/kg: RSS-4: 116 (116); RSS-5: 110 (110); Ungraded: 100 (100); ISNR 20: 99(99) and Latex (60% drc): 71.50 (71.50).