PTFE Washers ISO 7093 / DIN 9021
Teflon Washers: An Excellent Choice For Safety, Stability and Quality
Since 2023, DIN 9021 PTFE washers have been part of the Bülte standard range. PTFE, also known under the trade name Teflon™, is a high-performance plastic developed to meet the demanding requirements of modern industry and technology.
For critical applications, PTFE washers are the ideal choice thanks to their unique material properties. Even in extreme environments, they deliver outstanding performance due to their exceptionally low coefficient of friction and excellent temperature resistance. Excellent electrical insulation, outstanding corrosion resistance and exceptional chemical resistance complete the material's performance profile.
DIN 9021 PTFE washers are characterised by their larger outside diameter compared with DIN 125 washers. At Bülte, these Teflon washers are available in sizes M2–M20.
With plastic washers made from PTFE, you can expect reliable, low-maintenance and long-lasting fastening solutions. In addition, Bülte also offers DIN 9021 washers in nylon (PA), 30% glass fibre-reinforced nylon (PA-GF), PEEK, polypropylene (PP) and flexible PVC.
Applications for PTFE washers
Chemical industry
Resistant to aggressive chemicals, ensuring reliable use in processing equipment.
Food and pharmaceutical industry
Non-stick, corrosion-resistant and hygienic, ideal for machinery in regulated environments.
Electrical and electronics industry
Effective as electrical and thermal insulators in sensitive components.
High-temperature applications
Capable of withstanding extreme heat where other plastics degrade.
Automotive industry
Reliable in engines and transmission systems due to resistance to heat and corrosion.
Valves and piping
Suitable for sealing and load distribution in fluid systems.
Aerospace industry
Lightweight and durable, performing well under extreme temperature fluctuations.
Marine applications
Corrosion-resistant, ideal for offshore platforms and marine equipment.
Conclusion: DIN 9021 PTFE washers provide a versatile and durable solution for improving reliability, stability and longevity of mechanical joints. Widely used across industries, these Teflon washers ensure optimal load distribution and help prevent fasteners from loosening, even under the toughest operating conditions.