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O型圈 丁晴/线径3.53MM内径304.17/304.39/315.85/329.79/329.97
【甬成】丁腈O型圈NBR内径304.17/304.39/315.85/329.79*3.53
丁晴O型密封圈内径*线径315.85/329.79/335*3.53耐磨耐油
丁晴O型圈内径*线径315.85/329.79/335*3.53密封垫圈
O型圈丁晴内径304.39/315.85/329.79/329.97/335/335.19线径3.53
