Aya ma polypropylene caps ane hunhu hwekuisa chisimbiso uye anopa yakanaka makemikari kuramba anosanganisira acids, madoro, alkalis, aqueous zvigadzirwa, zvizorwa, nemafuta emumba. Polypropylene Hole Caps inozivikanwa nekunaka kwesimba simba, mutengo unoshanda, uye pliability. Septa inotengeswa zvakasiyana.