S-94610A421 22 mm ID x 50 mm OD ASME B18.22M Ultra-High-Temperature Ceramic Washers

Key Features & Benefits at a Glance

• Exceptional thermal resistance - withstands continuous operation up to 3000°F (1649°C) without degradation
• Superior electrical insulation properties - prevents current leakage in high-temperature electrical applications
• Excellent chemical inertness - resists corrosion from acids, alkalis, and other aggressive chemicals
• Maintains dimensional stability - ceramic material prevents warping or deformation under extreme thermal cycling
• Precise metric sizing - 22mm ID ensures perfect fit for M20 screws with 50mm OD for optimal load distribution
• Regulatory compliance assurance - meets RoHS 3 and REACH standards for safe industrial use
• Consistent thickness control - 3.5-4.6mm range provides reliable seating and uniform pressure distribution

Professional Applications & Engineering Value

This ceramic flat washer delivers critical performance in extreme environments where metallic components would fail. The off-white ceramic construction provides exceptional thermal stability, making it ideal for high-temperature applications including furnace fixtures, thermal processing equipment, and aerospace components. Unlike metal washers that expand and lose clamping force under heat, this M20 metric washer maintains its structural integrity and dimensional accuracy. The 22x50mm sizing ensures proper bolt load distribution while the ceramic material prevents galvanic corrosion when used with dissimilar metals. Engineers specify this ASME B18.22M compliant washer for critical joints in chemical processing, power generation, and semiconductor manufacturing where temperature extremes and chemical resistance are paramount.

Specification Summary & Compliance

This flat washer features precise metric dimensions with 22mm inner diameter, 50mm outer diameter, and controlled thickness between 3.5-4.6mm, engineered specifically for M20 screw applications. Manufactured to ASME B18.22M standards for dimensional consistency and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial use across global markets.