S-90449A220 12 mm ID x 20 mm OD DIN 7603 Hard Fiber Sealing Washers

Key Features & Benefits at a Glance

• Superior sealing performance with fiber material that conforms to surfaces for reliable leak prevention in M12 screw assemblies
• Excellent electrical insulation properties to prevent current leakage and protect sensitive electronic components
• Corrosion-resistant construction ensuring long-term reliability in harsh industrial environments
• Precise dimensional accuracy with 12mm ID, 20mm OD, and 0.8mm thickness for perfect fit with M12 fasteners
• Durable Rockwell R50 hardness providing consistent performance under compression and vibration
• Regulatory compliance assurance meeting DIN 7603 standards and environmental regulations for global acceptance
• Lightweight fiber composition reducing overall assembly weight while maintaining structural integrity

Professional Applications & Engineering Value

This M12 metric flat fiber washer delivers critical engineering solutions where electrical insulation and corrosion resistance are paramount. The fiber material composition provides exceptional dielectric properties, making it ideal for electrical enclosures, control panels, and electronic assemblies where current isolation is required. Its natural resistance to galvanic corrosion prevents degradation when used with dissimilar metals, extending service life in industrial machinery and outdoor equipment. The precise 12x20x0.8mm dimensions ensure proper load distribution under M12 fastener heads, preventing surface damage while maintaining consistent clamping force. The DIN 7603 compliance guarantees manufacturing consistency for engineers requiring standardized components in European machinery and automotive applications.

Specification Summary & Compliance

This flat fiber washer features precise metric dimensions: 12mm internal diameter, 20mm outer diameter, and 0.8mm thickness, engineered for M12 screw applications. Manufactured to DIN 7603 standards ensuring dimensional accuracy and performance consistency. The washer demonstrates Rockwell R50 hardness for optimal compression resistance. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental safety and restricted substance adherence for global industrial applications.