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PTFE (polytetrafluoroethylene) gaskets are an indispensable component in many industrial applications, especially in areas where high chemical resistance and excellent sealing capabilities are required. PTFE, known by the brand name Teflon, offers exceptional properties, such as heat resistance and low coefficient of friction, which make PTFE seals the ideal choice in various applications, including the chemical, food and pharmaceutical industries. This guide gives you an overview of the most important selection criteria for PTFE gaskets and the leading manufacturers in Germany.
PTFE gaskets are made of polytetrafluoroethylene, a thermoplastic polymer known for its chemical resistance, high temperature tolerance and low surface energy. These seals are often used in demanding environments where aggressive chemicals, extreme temperatures or high pressures may occur. Applications include pipe connections, pumps, valves, heat exchangers and reactors where a reliable sealing mechanism is essential.
When purchasing PTFE gaskets, you should pay attention to several critical factors that affect not only performance, but also safety and longevity. The following five selection criteria provide a solid basis for finding the right
manufacturer and select the right gaskets for your requirements:
PTFE is known for its exceptional chemical resistance. However, when selecting a PTFE gasket material, you should ensure that the gaskets are resistant to the specific chemicals found in your application. Temperature tolerance is also crucial, as PTFE can withstand temperatures from -200°C to around 260°C. Depending on the area of application, you should check whether the sealing material is specially designed for the chemical and thermal requirements.
PTFE gaskets are often used in applications that are exposed to high pressure or mechanical loads. It is important to know the pressure resistance of the gasket and ensure that it can handle the maximum operating pressure of the system. Some PTFE gaskets have fillers such as glass or carbon added to improve mechanical strength and increase load capacity.
PTFE is known for its extremely low coefficient of friction, which makes it ideal for moving parts. When the seals are used in dynamic applications, such as rotating or sliding components, a low coefficient of friction is beneficial to minimize wear and ensure a longer service life. PTFE seals with special additives can increase abrasion resistance and thus reduce maintenance requirements.
Depending on the specific requirements and dimensions of the equipment, customized PTFE gaskets may be required. Some manufacturers offer the option of customizing gaskets to exact specifications, using special manufacturing methods such as turning, punching or milling. This is particularly important for applications where standardized gaskets do not provide the desired protection or fit.
PTFE gaskets should meet certain industry and international standards to ensure their quality and reliability. For example, ISO 9001 and ISO 14001 certifications are an indicator of high quality management and environmentally friendly manufacturing processes. In special sectors such as the food or pharmaceutical industry, additional certificates such as FDA (Food and Drug Administration) conformity or EU Regulation 1935/2004 for food contact are important. These standards ensure that the seals are safe and reliable and meet the requirements of the industry.
A. SCHÜTH has been producing various static seals and stamped parts for over 125 years. The company also manufactures shaft seals and offers comprehensive support from consulting to large-scale production. A. SCHÜTH is known for its expertise and reliability.
DTH Dichtungstechnik GmbH produces and sells high-quality seals for various applications. The company has been ISO 9001 certified for many years and offers both standard and special solutions.
FRANKSA produces a wide range of milled plastic parts and seals. The company supplies numerous industries with over 3 million products and is known for its flexibility in the production of customized solutions.
RESOGOO specializes in high-quality flat gaskets and individual sealing solutions. With over 20 years of experience, the company offers products made of various materials that are known for their precision and durability.
Wallstabe & Schneider develops and produces precision seals such as O-rings, molded seals and composite parts. The company manufactures its own elastomer compounds and mainly supplies the automotive industry. Wallstabe & Schneider is certified according to ISO/TS 16949.
ADDENSEO International GmbH specializes in tailor-made solutions in the field of sealing technology, including PTFE seals. The company offers consulting, manufacturing and international sales of technical products.
As an established supplier of sealing solutions, including PTFE seals, Josef Blässinger GmbH + Co KG serves various branches of industry. The company emphasizes technical expertise and customer-specific solutions.
GTG is a certified manufacturer of gaskets, including PTFE gaskets, especially for window and façade construction. The company attaches great importance to quality and is certified according to various standards such as DIN EN ISO 9001 and ISO/TS 16949
As a specialist in sealing technology, Gummi Rademacher GmbH offers a wide range of sealing solutions, including PTFE seals. The company is characterized by its expertise in the development and manufacture of customer-specific seals.
SKF is a leading global technology provider, founded in 1907 and specializing in the development and manufacture of rolling bearings, seals, mechatronics and lubrication systems. The company offers solutions for various industrial sectors such as automotive, wind energy, railroad and aviation.
Choosing the right PTFE gaskets is critical to the performance and longevity of your industrial applications. By carefully considering chemical resistance, pressure and load capacity, coefficient of friction and customization options, as well as reviewing relevant certifications, you can ensure that the selected gaskets meet your specific requirements. Choosing the right manufacturer also plays a key role in ensuring the long-term quality and reliability of your seals. This buying guide will help you make informed decisions and ensure that your PTFE gaskets are the best fit for your application.