Reliance Sibur Elastomers Private Limited (RSEPL), a joint venture between Russian gas and petrochemicals company Sibur and India’s Reliance Industries Limited (RIL), has announced plans to establish southern Asia’s first halogenated butyl rubber unit at RIL’s integrated petrochemical facility in Jamnagar, India. Halogenated butyl is a key ingredient in the manufacture of tubless tyre inner liners.