| 摘要 |
A pipe bell including a radially extending groove which is defined rearwardly by an acute angle of design to firmly seat a gasket therein. The groove is forwardly defined by an inwardly curved mouth or inward bend of suitable size to receive the spigot end of the next adjacent pipe length therein. A gasket which includes a forward, circular lip and an integral, rearward, larger lip is positioned within the groove to seal against the spigot end of the next adjacent pipe length. The gasket includes an angular rear shoulder of suitable configuration to lock within the pipe groove between the rearward acute angle and the forward bent end and may be peripherally outwardly arcuately shaped for better sealing. If desired, the gasket may be provided with an inwardly open groove to receive therein a plastic retaining and locking ring to aid in preventing seal movement.
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