| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a coupling for a piping fixedly attached to the piping for a long period with excellent sealing ability without the occurrence of deterioration after burying in a ground. SOLUTION: A hydrogenated styrenic thermoplastic elastomer, an olefin resin, and rubber are contained such that a ratio [(a):(b)] between a total weight (a) of the hydrogenated styrenic thermoplastic elastomer and the olefin and a rubber weight (b) is contained within the range of 60:40-10:90 and a rubber composition in which the rubber is dynamically crosslinked and which is dispersed in a mixture of the hydrogenated styrenic thermoplastic elastomer and the olefin resin is molded to produce a coupling for piping.</p> |
