Nta:
* Kev sib txuas nruab nrab elastic
* Muaj peev xwm nqus tau kev poob siab, them nyiaj radial, angular thiab axial sib txawv
* Thawj roj tsis kam thiab hluav taws xob rwb thaiv tsev
* Cov yam ntxwv ntawm clockwise thiab counterclockwise kev sib hloov yog tib yam
* Ib qho muaj peb qhov sib txawv hardness elastomers
* Ib qho clamping ntsia hlau kho txoj kev