Spot rubber closed unchanged on Tuesday. RSS 4 finished flat at ₹108 a kg, according to traders and the Rubber Board. The grade quoted steady at ₹105 by dealers. March futures slid to ₹110.25 (₹110.55), April to ₹111.50 (₹112.08), May to ₹113.89 (₹114.46) and June to ₹115.51 (₹116.67) on the National Multi Commodity Exchange. RSS 3 (spot) declined to ₹94.84 (₹96.69) at Bangkok. March futures closed at ¥155.3 (₹92.57) on the Tokyo Commodity Exchange. Spot rubber rates (₹/ kg): RSS-4: 108 (108); RSS-5: 105.50 (105.50); Ungraded: 102(102); ISNR 20: 103 (103) and Latex (60% drc): 78.50 (78.50).