Thewera mayina pamwamba zithandize zigawo kuteteza yoyamikira makina, monga Mipikisano olamulira lathe mu malo yopapatiza kwambiri ndi kayendedwe kusintha akufuna. 
Ndi mitundu zipangizo tikhoza kupereka mkulu-kwamakokedwe polymide nsalu TACHIMATA ndi NBR kapena polyurethane, zotayidwa mbiri ndi NBR TACHIMATA nsalu hinge, zotayidwa mbiri ndi kumadalira. 
Kusinthasintha ndi mwayi zofunika kwambiri, thewera mpukutu akuluakulu akhoza anakonza bokosi zitsulo ndi zovuta anakonza makina. 
Ndi zotheka kuti angagwirizanitse ndi wiper pa bokosi omwe angathandize mpukutu mmwamba kuyeretsa Chip lapansi. 
Thewera mpukutu mmwamba akhoza kugwiritsidwa ntchito ngati mpukutu khomo kapena nsalu.