S-90449A270 18 mm ID x 22 mm OD DIN 7603 Hard Fiber Sealing Washers

Key Features & Benefits at a Glance

• Superior sealing performance with fiber material that effectively prevents fluid and gas leakage in industrial assemblies
• Excellent electrical insulation properties for safe operation in electrical applications and corrosive environments
• Precise dimensional compatibility with 18mm ID perfectly matching M18 screws for secure fastening without slippage
• Optimized load distribution through 22mm OD design that protects surfaces and prevents component damage
• Consistent performance under pressure with Rockwell R50 hardness ensuring dimensional stability and long service life
• Guaranteed interchangeability through DIN 7603 certification for reliable performance across European industrial applications
• Environmentally responsible manufacturing with full compliance to RoHS 3 and REACH regulations for workplace safety

Professional Applications & Engineering Value

This M18 fiber flat washer delivers critical engineering solutions where sealing and electrical insulation are paramount. The fiber material composition provides exceptional resistance to compression set while maintaining seal integrity under varying temperatures and pressures. In electrical enclosures, motor assemblies, and plumbing systems, the washer prevents galvanic corrosion between dissimilar metals and stops fluid penetration. The metric dimensions (18mm ID × 22mm OD × 0.8mm thickness) ensure perfect fit with M18 fasteners, eliminating the need for custom solutions. Manufacturing to DIN 7603 standards guarantees consistent quality and performance across automotive, machinery, and industrial equipment applications where reliability cannot be compromised.

Specification Summary & Compliance

This flat washer features precise metric dimensions with 18mm internal diameter, 22mm outer diameter, and 0.8mm thickness. Manufactured to DIN 7603 standards for dimensional accuracy and performance consistency. The fiber material achieves Rockwell R50 hardness for optimal compression resistance. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and workplace safety standards are met for industrial applications.