Designed for use where flimsy air ducting hose is not suitable. Built with tube rubber compounds to suit many applications: tan Pure Gum, premium red abrasion resistant Durashield pure gum, black abrasion resistant & static conductive natural blend, Oil and Gas resistant Nitrile or Neoprene. Also available with EPDM tube & cover suitable for Acid & Chemical exhaust fumes, and different Food Grade compounds.