Rubutun roba na Butyl roba ne mai inganci tare da jure yanayin zafi. Yana yana da na kwarai low gas da danshi permeability.Butyl roba takardar da ake amfani a da yawa wasu aikace-aikace, kasancewa sosai impermeable ga gas, ozone, ultraviolet haske, sunadarai da weath-ering.
