Spot rubber declined further on buyer resistance amidst extremely dull volumes. RSS 4 weakened to ₹141 (142) a kg, according to traders and the Rubber Board. The grade dropped to ₹138 (139), according to dealers. September futures slid to ₹135.45 (136.62), October to ₹129 (130.29) and November to ₹126.75 (128) on the National Multi Commodity Exchange. RSS 3 (spot) weakened to ₹113.83 (114.08) a kg at Bangkok. August futures declined to ¥180.1 (₹120.30) on the Tokyo Commodity Exchange. Spot rubber rates (₹/kg): RSS-4: 141 (142); RSS-5: 137 (138); Ungraded: 110 (112) ; ISNR 20: 117 (118) and Latex (60% drc): 83 (83).