Spot rubber closed unchanged on Thursday. RSS 4 continued to rule steady at ₹102 a kg, according to traders. The grade was flat at ₹101.50 and ₹98.50 respectively, according to the Rubber Board and the dealers. RSS 3 (spot) dropped to ₹82.88 (₹83.31) at Bangkok. January futures closed at ¥151.9 (₹83.39) on the Tokyo Commodity Exchange. Spot rubber rates (₹/kg): RSS-4: 102(102); RSS-5: 99 (99); Ungraded: 92(92); ISNR 20: 84.50 (84.50) and Latex (60% drc): 74 (74).