Rinjiyeynta buufinta waa farsamo rinjiyeyn ah oo qalabku ku buufiyo walxaha dahaarka hawada dusha sare.
Noocyada ugu badan waxay adeegsadaan gaas la cadaadiyey—badanaa hawo—si ay u atomiyaan una hagaan walxaha rinjiga.

Rinjiga buufinta ee lagu mariyo alaabta silikoonka waa in lagu buufiyo midab ama dahaadh hawada korkeeda oo lagu shubo dusha sare ee silikoonka.