| 摘要 |
A stopper for a magnetic head is capable of coming into contact with a locking portion formed on an arm having a magnetic head, has surface roughness (Rz) of at least 1μm and not more than 6.5μm, and is made of a polyurethane-based elastomer composition. This polyurethane-based elastomer preferably contains a polyurethane elastomer consisting of diisocyanate and adipate-based polyol.
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