| 摘要 |
A two-part housing grips and surrounds a portion of a pipe, with ports at first and second ends of the housing through which the pipe extends. An annular end seal of elastomeric material at each end of the housing provides a seal between the pipe and housing. The end seals each have one slit for allowing the seals to be engaged transversely over the pipe. Each port has an annular recess for enclosing the respective end seals. The cross-sectional area of each end seal in a relaxed condition is greater than the cross sectional area defined between the outer surface of the pipe and the annular recess in the housing when the housing is closed around the pipe, so that the end seals are squeezed between the opposing surfaces of the pipe and housing when the two parts of the housing are secured around the pipe. Face seals extend between the end seals on opposite sides of the housing to seal the intersection between the two housing parts.
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