The kwampreso crankcase hita ne yafi hada da gami lantarki dumama waya da silicon roba, shi dumama azumi uniform thermal yadda ya dace high tauri, sauki don amfani da tsawon rai, ba sauki ga tsufa.
Silicone dumama bel za a iya musamman a matsayin abokin ciniki ta bukatun, da nisa muna da 14mm, 20mm, 25mm, ko mafi girma nisa.