Spot rubber closed unchanged on Monday. RSS 4 finished steady at ₹119 a kg, according to traders and the Rubber Board. The grade finished flat at ₹116as quoted by the dealers. October futures firmed up to ₹118.40 (₹114.95), November to ₹118.50 (₹114.39), December to ₹118.15 (₹114.82), January to ₹118 (₹113.75) and February to ₹118.33 (₹114.88) on the National Multi Commodity Exchange. RSS 3 (spot) improved to ₹108.39 (₹107.91) at Bangkok. Spot rubber rates ₹/kg were: RSS-4: 119(119); RSS-5: 111 (111); Ungraded: 97 (97); ISNR 20: 94 (94) and Latex (60% drc): 69 (69).