S-91666A140 6.4 mm ID x 12.5 mm OD Plastic Washers

Key Features & Benefits at a Glance

• Exceptional chemical resistance for reliable performance in harsh industrial environments where corrosion is a concern
• High-temperature stability up to 300°F ensures dimensional integrity and prevents deformation under thermal stress
• Maintained Rockwell R93 hardness across operating temperatures for consistent load distribution and long service life
• Precision 6.4mm ID and 12.5mm OD metric sizing guarantees perfect fit and secure fastening with M6 screws
• Durable PVDF plastic construction offers excellent wear resistance and reduces galvanic corrosion risk when paired with dissimilar metals
• Compliance with RoHS 3 and REACH regulations provides assurance for use in regulated industries and global supply chains
• Optimized 1.4-1.8mm thickness range balances mechanical strength with flexibility for effective sealing and vibration damping

Professional Applications & Engineering Value

Engineered for demanding environments, these PVDF plastic flat washers deliver critical performance where metal components fail. The polyvinylidene fluoride material provides superior resistance to aggressive chemicals, acids, and solvents, making them ideal for chemical processing, semiconductor manufacturing, and food processing equipment. Their ability to maintain structural integrity at continuous temperatures up to 300°F solves thermal expansion mismatches in high-temperature assemblies. The metric M6 sizing with precise inner and outer diameters ensures proper seating and load distribution, preventing screw loosening in vibrating machinery. These white plastic washers serve as excellent electrical insulators and are non-contaminating for cleanroom applications, offering engineers a reliable alternative to metal washers in corrosive or electrically sensitive environments.

Specification Summary & Compliance

This flat washer features metric dimensions with 6.4mm inner diameter, 12.5mm outer diameter, and 1.4-1.8mm thickness range, designed specifically for M6 screw applications. Manufactured from PVDF plastic with Rockwell R93 hardness rating, it maintains performance across its operational temperature range. The product complies with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations concerning chemical substances, ensuring environmental and workplace safety compliance for industrial users.