Rubber wani abu ne mai ƙarfi na polymer mai ƙarfi tare da juzu'i mai jujjuyawa.

Yana da na roba a zafin jiki na cikin gida kuma yana iya haifar da babban lahani a ƙarƙashin aikin ƙaramin ƙarfi na waje.Yana iya komawa matsayinsa na asali bayan an cire karfin waje.

Akwai nau'ikan roba da yawa da suka hada da EPDM, Rubber Neoprene, Viton, Rubber Na halitta, Rubber Nitrile, Rubber Butyl,Timprene, Rubber Roba, da sauransu.