What is the function of a seal?

Hit：3402024-02-02 10:34:29　Source: 邢台新四通密封件有限公司|汽车油封|摩托车油封|气门油封|O型圈|修理包|国标油封规格表|汽车油封规格表

In hydraulic systems and their systems, sealing devices are used to prevent the leakage of working media and the invasion of external dust and foreign objects. Components that play a sealing role