Hauff-Technik manufactures house entries, conduit systems, annular space seals and fire-rated cable and pipe transits from Hermaringen in Baden-Württemberg. Its Hauff Sicherheitsschott HSS fire-resistant seal for electrical services holds DIBt allgemeine Bauartgenehmigung Z-19.53-2290. A second plant and technical operation is run at Heidenheim an der Brenz.