Spot rubber showed a mixed trend on Tuesday. RSS 4 finished unchanged at ₹143 a kg, according to traders and the Rubber Board. The grade was quoted steady at ₹140 a kg by dealers. May futures weakened to ₹146 (₹148.86), June to ₹147.35 (₹149.51) and July to ₹147 (₹148.91) on the National Multi Commodity Exchange. RSS 3 (spot) firmed up to ₹121.54 (₹120.56) at Bangkok. May futures closed at ¥192.2 (₹115.32) on the Tokyo Commodity Exchange. Spot rubber rates (₹/kg): RSS-4: 143 (143); RSS-5: 141(140); Ungraded: 130 (130); ISNR 20: 132(130) and Latex (60% drc): 115 (115).