This International Standard specifies requirements for material for preformed vulcanized rubber joint seals used between concrete paving sections of highways. It is applicable to seals for joints in new concrete highways as well as to maintenance work on such highways. It does not cover the design or dimensions of seals, but general requirements for finished seals are given. NOTE This International Standard is based on experience with chloroprene (CR) rubber and ethylene-propylene-diene monomer (EPDM) rubber.