公开(公告)号：US20210148468A1

公开(公告)日：2021-05-20

申请号：US16683805

申请日：2019-11-14

申请人： Freudenberg Oil & Gas, LLC

发明人： Nagarjuna JILLELLA ,  Ian SMITHAM ,  Patrick RAWLS ,  Keith ANDERSON ,  James SMITH ,  Sebastian OSPINA

IPC分类号： F16J15/34

摘要： An annular dual barrier seal includes a pair of axially extending inner seal lips and a pair of axially extending outer seal lips, the pair of inner seal lips are connected to the pair of outer seal lips by a radially outwardly extending web portion. The pair of inner seal lips extend axially by a first dimension and the pair of outer seal lips extend axially by a second dimension which is greater than the first dimension. The pair of inner seal lips have a sealing surface that is one of partially toroidal and partially elliptical and that engage the radially inwardly facing first sealing surface and the pair of outer seal lips have a sealing surface that is one of partially toroidal, partially elliptical and conical.