Spot rubber regained strength but it failed to improve in tandem with the global gains as major consuming industries continued to abstain from the market. RSS 4 firmed up to ₹131 (₹130) a kg, according to traders. The grade closed marginally higher at ₹130 (₹129) and ₹127 (₹126) respectively as reported by the Rubber Board and dealers. December futures improved to ₹133.47 (₹132.24), January to ₹135.85 (₹134.33) February to ₹138.49 (₹137.61) and April to ₹143 (₹140.38) on the National Multi Commodity Exchange. RSS 3 (spot) flared up to ₹140.78 (₹136.41) at Bangkok. November futures increased to ¥231.5 (₹140.91) on the Tokyo Commodity Exchange. Spot rubber rates (₹/kg): RSS-4: 131 (130); RSS-5: 127 (126); Ungraded: 117 (115); ISNR 20: 119 (118) and Latex (60% drc): 78 (77).