1) Dahaarka Gudaha - NBR (tubo aan lahayn Vulcanized);
2) Bakhtiga ugu muhiimsan - Xadhkaha polyesterka iyo siliga birta;
3) Walxaha sabbeynta - Xumbo gacanta oo xiran (Kaliya tuubada sabbaynaysa);
4) Daboolka dibadda - Daboolka elastomer-ka ee la xoojiyay.