S-95647A172 31 mm ID x 56 mm OD Plastic Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance - Ideal for harsh environments where metal washers would degrade
• Excellent electrical insulation properties - Prevents current leakage and electrical shorts in applications
• High dimensional stability - Maintains precise 31mm ID and 56mm OD under varying conditions
• Outstanding wear resistance - Rockwell M90 hardness ensures long service life with minimal deformation
• Wide temperature tolerance - Performs reliably up to 180°F (82°C) without compromising integrity
• Chemical resistance - Delrin® Acetal material withstands exposure to various industrial chemicals
• Lightweight alternative - Reduces overall assembly weight while maintaining performance

Professional Applications & Engineering Value

This M30 Delrin® Acetal Plastic Flat Washer delivers exceptional engineering value across multiple industrial sectors. The white Delrin® Acetal material provides superior electrical insulation, making it ideal for electrical enclosures, control panels, and electronic assemblies where current isolation is critical. The metric flat washer design ensures proper load distribution for M30 fasteners while the acetal plastic construction eliminates galvanic corrosion issues when used with dissimilar metals. In food processing, chemical handling, and marine applications, the corrosion-resistant properties prevent contamination and maintain system integrity. The 2.2-2.6mm thickness provides optimal spacing and vibration dampening in mechanical assemblies where electrical conductivity must be avoided.

Specification Summary & Compliance

This metric flat washer features precise dimensions of 31mm inner diameter and 56mm outer diameter with a controlled thickness range of 2.2-2.6mm. Manufactured from Delrin® Acetal Plastic with Rockwell M90 hardness rating, the washer maintains dimensional stability across its operating range. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant as of June 14, 2023, meeting the latest environmental and safety standards for industrial components. Suitable for applications requiring maximum temperature resistance up to 180°F while providing reliable performance in demanding environments.