发明名称 Pack off seal
摘要 A sealing device having a body section and two anti-extrusion sections is disclosed, the body section being disposed between the anti-extrusion sections. The body section includes sealing surfaces for enclosures in which the sealing device is located. The anti-extrusion section prevents extrusion of the body section.
申请公布号 US5551703(A) 申请公布日期 1996.09.03
申请号 US19930011338 申请日期 1993.01.29
申请人 MORVANT, JOHN D. 发明人 MORVANT, JOHN D.
分类号 F16J15/16;F16J15/32;(IPC1-7):F16J15/10 主分类号 F16J15/16
代理机构 代理人
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