- Ibyiciro byinshi birashobora gutegurwa kubisabwa nabakiriya.
- ibice byamashanyarazi birashobora kuba bifite ubwoko bwokwirinda
1. Ibice byose bihura nibikoresho ni ibirahuri cyangwa PTFE, anti-ruswa.
2. Ingano itandukanye yikirahuri cyumucanga kugirango uhitemo.
3. Kwimuka bishobora kandi gushyirwaho feri.