Valve stem seal imhando yechisimbiso chemafuta, anowanzo gadzirwa nevulcanised exoskeleton uye fluoroelastomer, ine self-tensioning chitubu kana simbi waya yakaiswa padhayamita yechisimbiso, inoshandiswa kunama injini dhizaini redhiyo. iri muhumburumbira musoro, pasi pevharuvhu ...
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