Pulasitiki ndi mphira wa polymer zomwezi {{0} pulasitiki ndi yolimba, yolimba kwambiri ndipo siyingatambasulidwa {{4} Kubwezeretsani mwachindunji {{7}
1) Mbewu yoyendetsa rate ndi yopanga kutentha, ndipo mawonekedwe ake ndi pafupifupi 2 {6} {1 {} Dera, kutentha kutentha kudzayenda bwino, ndipo mawonekedwe a mafuta adzachepetsedwa kukhala 0,5 ~ 2.0 watts. Ziwalo zilizonse za mphira zomwe zikugwiritsidwa ntchito zimatha kupangira kutentha chifukwa cha kuwonongeka kwa hysteresis, chifukwa chake chisamaliro chiyenera kumwetulira kuti usungunuke.
2) Kuchulukitsa kwa mafuta chifukwa cha kuchuluka kwakukulu kwa ma unyolo moleclar, masitepe amkati amayamba kukhala osakwanira 1 {{6} 2 ~ 3 {{7} 5% zokhala ndi mphira wa rabara {{9} Dokotala dongosolo la ma shrazage osiyanasiyana ndi: Fluorororubber> Silicone Rubbet> Newrene> Chifukwa cha rabara Zoposa madola 250 biliyoni, zinthu za mphira zakhala chinthu chofunikira kwambiri pantchito yapadziko lonse. Pamsika wapadziko lonse lapansi, zinthu za mphira zakhazikitsa matayala monga malo, kuyang'ana pazinthu zopangira mafakitale monga matepi a mphira komanso thanzi monga thanzi, chikhalidwe ndi masewera.