| 摘要 |
A reusable pipe fitting plug for temporarily sealing the open hub on a non-threaded female pipe fitting. The pipe fitting plug has a retainer with piercing edges, expandable pins or grit type particles designed to engage the inner portion of a pipe fitting hub in order to anchor the pipe fitting plug. The pipe fitting plug further has an expandable rubber seal or expandable rubber bladder designed to provide a watertight seal.
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