Selecting the right sealing component is important when a larger bolt requires a dependable and stable sealing surface. PEEK sealing washers are designed for M12, M14, M16, M18 and M20 bolts, providing a practical sealing solution for applications where standard plastic washers may not offer enough resistance to heat, chemicals or wear. As a PEEK sealing washers factory, we manufacture these washers from high-performance PEEK material, combining mechanical strength, chemical resistance, temperature stability and high wear resistance for demanding industrial applications. They are suitable for industrial machinery, pumps, valves, fluid handling equipment and other mechanical assemblies where reliable sealing performance is important. For larger bolt connections, proper sizing is essential, so the bolt diameter, washer dimensions and available sealing surface should be considered together to achieve a secure fit and dependable sealing result.
| Model | Outer Diameter (OD) | Inner Diameter (ID) | Thickness |
|---|---|---|---|
| YX-M12 | 24mm | 13mm | 2.5mm |
| YX-M14 | 28mm | 15mm | 2.5mm |
| YX-M16 | 30mm | 16.2mm | 3.0mm |
| YX-M18 | 34mm | 18.2mm | 3.0mm |
| YX-M20 | 37mm | 21mm | 3.0mm |
In practical industrial scenarios, the performance of a sealing washer over time is often influenced by the working environment. PEEK sealing washers excel in resisting various oils, fuels, solvents, and aggressive chemicals while offering high-temperature resistance and strong dimensional stability. The material exhibits high wear resistance and a relatively low friction coefficient, beneficial for components subjected to repeated assembly, tightening, or servicing. PEEK ensures the washer remains stable without becoming brittle or deforming easily under continuous use. However, actual performance hinges on factors like temperature, chemical exposure, bolt load, mating surfaces, and installation conditions.
For applications from M12 to M20, sizing requires more than just matching the bolt diameter. The inner diameter should fit snugly around the bolt while the outer diameter must offer ample contact with the surrounding sealing surface. Washer thickness can impact the final assembly and compression available, especially when used as a sealing gasket rather than solely as a load-distribution component. PEEK washers suit industrial equipment, chemical processing systems, pumps, valves, electrical equipment, fluid connections, and mechanical assemblies. If your application features a non-standard sealing area or specific inner and outer diameters or thickness is needed, custom dimensions might be preferable to a standard washer.
For industrial buyers, obtaining the right specifications before production is crucial to prevent future fit and sealing issues. Yixuan Precision is among PEEK sealing washers manufacturers providing PEEK sealing washers for industrial applications, with OEM and custom manufacturing available for both standard and non-standard requirements. Share your bolt size, required washer dimensions, quantity and application conditions with us, and our team can help confirm the appropriate PEEK washer configuration before quoting. Contact us for a factory quotation and a tailored PEEK sealing washer solution for your project.






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