Samfurin rubber butyl ɗin roba ne mara kyau-kamar ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan 0.92g\/cm3. Ba shi da wari, maras narkewa a cikin ruwa, kuma mai narkewa a cikin hexane da chloroform. Har ila yau, samfurin yana da ƙarancin iskar iska, mai kyaun iska, da kuma juriya mai kyau. Ozone juriya, sinadarai juriya, lantarki rufi, sassauci juriya, zafi juriya, makamashi sha da sauran halaye.