S-90449A280 18 mm ID x 24 mm OD DIN 7603 Hard Fiber Sealing Washers

Key Features & Benefits at a Glance

• Superior chemical resistance from fiber material, ideal for harsh industrial environments with exposure to solvents and chemicals
• Excellent electrical insulation properties preventing galvanic corrosion and current leakage in electrical assemblies
• Precise dimensional accuracy with 18mm ID, 24mm OD and 0.8mm thickness ensuring perfect fit for M18 screw applications
• Enhanced durability and load distribution with Rockwell R50 hardness rating for long-lasting performance under pressure
• Guaranteed quality compliance meeting DIN 7603 standards for consistent manufacturing quality and reliability
• Environmentally safe operation with full RoHS 3 and REACH compliance for sustainable industrial practices
• Optimal sealing capability providing effective vibration damping and minor gap filling in mechanical assemblies

Professional Applications & Engineering Value

This M18 fiber flat washer delivers exceptional engineering value in applications where metal washers would corrode or conduct electricity. The fiber material composition offers natural resistance to petroleum products, solvents, and most chemicals, making it indispensable in automotive, electrical, and chemical processing industries. Its 0.8mm thickness and precise metric dimensions (18mm ID x 24mm OD) ensure perfect seating on M18 fasteners while providing consistent load distribution. The Rockwell R50 hardness maintains structural integrity under compression, preventing deformation in high-vibration environments. Engineers specify this DIN 7603 compliant washer for electrical insulation, corrosion prevention, and where non-conductive, non-magnetic properties are required, solving critical assembly challenges in sensitive equipment.

Specification Summary & Compliance

This metric flat washer features precise dimensions: 18mm internal diameter, 24mm external diameter, and 0.8mm thickness, engineered for M18 screw applications. Manufactured to DIN 7603 standards ensuring dimensional accuracy and consistent quality. The fiber material achieves Rockwell R50 hardness for reliable performance. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental and safety requirements for industrial components.