This connection has a left - hand thread ( loosens with clockwise rotation ) and requires a gasket to seal.

这种接头具有左手螺纹 ( 顺时针旋转为松开 ) ,要求使用垫圈来密封.

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The general taps are right - hand thread. Please specify if some left - hand thread taps are needed.

丝锥通常生产右扣螺纹,如需左扣螺纹应在订货时说明.

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