Physical Rubber prices extended gains on Thursday due to robust demand from tyre manufacturers and a severe supply crunch in the market, while higher production costs of petroleum-based synthetic rubber also boosted natural rubber demand.
Spot prices for the RSS-4 variety rose to Rs 290.50/kg to its previous closing of Rs 289.50/kg; while the RSS-5 variety gained to Rs 284.50/kg to its previous closing of Rs 283.50/kg.