SINCE 1828
GR-S
noun
\ ¦jēˌär¦es\
variants:
or less commonly GR-S rubber
Definition of GR-S
: any of a class of general-purpose synthetic rubbers that are made by copolymerizing emulsions of butadiene and styrene commonly at a temperature of either 122° F or 41° F and that are used especially in tires — see cold rubber
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