|魍者歸來發(fā)表于 03-21 18:44單密封?理論上封不住,,或者說不保險(xiǎn)啊
tomback 發(fā)表于 2020-3-21 18:52 % }9 u1 U g9 N* R把一個(gè)O型圈換成一對(duì)唇形密封圈會(huì)不會(huì)可靠點(diǎn),?