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See Chinese contents: GB/T 7762-2014 GB/T 7762-2014: Rubber, vulcanized or thermoplastic -- Resistance to ozone cracking -- Static strain test
This Standard specifies procedures intended for use in estimating the resistance of vulcanized or thermoplastic rubbers to cracking when exposed, under static tensile strain, to air containing a definite concentration of ozone and at a definite temperature in circumstances that exclude the effects of direct light.
