Amakhiphedi erabha erabha yensimbi econductive, aziwa nangokuthi amakhiphedi edome yensimbi, angamadivayisi okufaka akhethekile aklanyelwe ukunikeza impendulo ethintekayo lapho icindezelwe.Lawa makhiphedi aqukethe isisekelo serabha noma i-silicone esinamadome ensimbi ashumekiwe, asebenza njenge-elementi yokuqhuba.