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公开(公告)号：EP0134123A2
公开(公告)日：1985-03-13
申请号：EP84305261.4
申请日：1984-08-02
CPC分类号： F16J15/021 , B01J3/03 , F16J13/08 , F16J15/062
摘要： Sealing between an access opening (15) in a pressure ves- set (11) and a closure member (20) fitted in the openings is provided by an O-ring (38) of perfluoroelastomer in an annular groove (39) formed in a surface of the closure member. The sidewall (42) of the groove on the low pressure side of the seal has a concave curvature in cross section so as to form a «hook» or lip which retains the O-ring in the groove and prevents creeping extrusion of the O-ring under prolonged exposure to high temperature and pressure fluid on the high pressure side of the seal, even with a clearance between the closure member and the access opening of up to approximately 1 percent of the diameter of the O-ring cross section.
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公开(公告)号：EP0134123A3
公开(公告)日：1987-07-01
申请号：EP84305261
申请日：1984-08-02
CPC分类号： F16J15/021 , B01J3/03 , F16J13/08 , F16J15/062
摘要： Sealing between an access opening (15) in a pressure ves- set (11) and a closure member (20) fitted in the openings is provided by an O-ring (38) of perfluoroelastomer in an annular groove (39) formed in a surface of the closure member. The sidewall (42) of the groove on the low pressure side of the seal has a concave curvature in cross section so as to form a «hook» or lip which retains the O-ring in the groove and prevents creeping extrusion of the O-ring under prolonged exposure to high temperature and pressure fluid on the high pressure side of the seal, even with a clearance between the closure member and the access opening of up to approximately 1 percent of the diameter of the O-ring cross section.
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