公开(公告)号：EP3822520A1

公开(公告)日：2021-05-19

申请号：EP20200189.7

申请日：2020-10-06

申请人： Freudenberg Oil & Gas, LLC

发明人： Jillella, Nagarjuna ,  Smitham, Ian ,  Rawls, Patrick ,  Anderson, Keith ,  Smith, James ,  Ospina, Sebastian

IPC分类号： F16J15/06 ,  F16J15/08 ,  F16L23/18 ,  F16L23/20 ,  F16J15/02 ,  F16L17/06 ,  F16L17/067 ,  F16L17/08

摘要： An annular dual barrier seal (10) includes a pair of axially extending inner seal lips (20a, 20b) and a pair of axially extending outer seal lips (22a, 22b), the pair of inner seal lips are connected to the pair of outer seal lips by a radially outwardly extending web portion (24). 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 (26) 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 (28) that is one of partially toroidal, partially elliptical and conical.