S-93785A826 0.938" ID x 2.25" OD ASME B18.21.1 Plastic Washers

Key Features & Benefits at a Glance

• Exceptional thermal performance maintains structural integrity across a wide -20°F to 500°F temperature range, ideal for extreme environment applications
• Superior chemical and wear resistance thanks to PEEK plastic material with Rockwell M103 hardness, ensuring long service life in harsh conditions
• Precise dimensional compatibility with 0.938" ID and 2.25" OD designed specifically for 7/8" screw sizes, providing reliable fit and consistent performance
• Compliance with industry standards including ASME B18.21.1, ensuring consistent quality and interchangeability in industrial assemblies
• Environmental regulation adherence with RoHS 3 and REACH compliance, meeting strict international substance restriction requirements
• Reliable electrical insulation properties inherent to PEEK material, preventing galvanic corrosion and electrical leakage in sensitive applications
• Reduced maintenance requirements due to excellent creep resistance and dimensional stability under load and temperature fluctuations

Professional Applications & Engineering Value

These PEEK plastic flat washers deliver critical engineering solutions for demanding industrial environments where conventional materials fail. The high-temperature resistance up to 500°F makes them ideal for aerospace, automotive, and chemical processing equipment where thermal stability is paramount. The black PEEK material provides excellent resistance to harsh chemicals, solvents, and radiation, while maintaining dimensional stability across the entire operating range. Engineered specifically for 7/8" screw applications, these washers prevent galvanic corrosion in mixed-material assemblies and offer reliable electrical insulation in electronic enclosures. The precision flat washer design ensures even load distribution while the Rockwell M103 hardness provides exceptional wear resistance in high-vibration machinery, significantly extending maintenance intervals and reducing downtime in critical operations.

Specification Summary & Compliance

These flat washers feature precise dimensional specifications with 0.938" inner diameter, 2.25" outer diameter, and thickness ranging from 0.108" to 0.160". Manufactured to ASME B18.21.1 standards for consistent quality and performance in inch system applications. The components are fully RoHS 3 (2015/863/EU) compliant and meet REACH (EC 1907/2006) requirements as of January 17, 2022, including compliance with 223 SVHC substances. The PEEK material maintains mechanical properties across the specified temperature range from -20°F to 500°F, ensuring reliable performance in both cryogenic and high-temperature industrial environments.