Umbala:Ingaphakathi kunye neendonga zangaphandle zeemveliso zihlala zimnyama.
Iimfuno: Iimpawu ze-Elastomeric zihlangabezana neemfuno ze-HG/T 3091-2000.
Inokutshintsha imibhobho yekhonkrithi kunye nemibhobho yentsimbi.