About us

GAPI Technische Produkte GmbH specialises in the development, production and sale of sophisticated components and assemblies made of high-performance plastics such as PAI GLon™ and PEEK GSpire™. These materials are based on the high-performance polymers Torlon® PAI and KetaSpire® PEEK and offer outstanding mechanical, thermal as well as chemical properties.


With decades of experience and unique know-how in the processing of high-performance thermoplastics, we are one of the world's largest injection molding processors of Torlon® PAI. We accompany our customers from the initial idea to series production – from the selection of materials and the design of new components to the optimisation of existing systems and series production.

GAPI Technische Produkte GmbH is part of the internationally active GAPI GROUP with headquarters near Bergamo, Italy. The companies in the group specialise in the development, design and manufacture of high-quality sealing solutions made of elastomers, PTFE and plastics, as well as semi-finished products and fluid power seals made of thermoplastic elastomers (PU). In addition to manufacturing, the range of services also includes the design and sale of these technologically sophisticated components.

• 1946          Founding of Polymer Corp. in Reading, Pennsylvania, USA
• 1961           Founding of Polypenco company for industrial plastics in Cologne, Germany
• 1960s        Beginnings of the Gapi Group with O-ring manufacturing and elastomer processing
• 1980s        Start of Torlon processing (first machining from semi-finished products, later also in     
                     injection molding)
• 1999          Dissolution of Polypenco company and integration of the automotive division into the Gapi
                    Group
• 2001          Move to Rösrath, Germany
• 2006         Expansion of production capacities by further 5 injection moulding machines
• 2009         Completion of the second production hall (doubling of production and office space)
• 2010          Expansion of production capacities by further 4 injection moulding machines
• 2012          Expansion of the company's own toolmaking
• 2017          Expansion of production capacities by further 5 injection moulding machines
• 2017          Expansion of the toolmaking by 2 electric discharge machines (wire cutting, die-sinking)
• 2018          Modernization of injection molding production with overhead crane runways and central
                    material supply
• 2018/19     Expansion of the toolmaking department with a 5-axis machining centre and a lathe
                    with driven tools
• 2019          Expansion of production capacities by further 4 injection moulding machines with multi-axis                    handling
• 2023         Reinforcement of the injection moulding, application technology and toolmaking team
• 2024         Expansion of production capacities by 3 all-electric injection moulding machines
• 2024         Introduction of an ERP system and implementation of modernization actions
• 2025         Official announcement of the proposed merger between Gapi Group and
                   Argomm Group