S-97725A306 12.2 mm ID x 15.9 mm OD DIN 7603 Metal Sealing Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from cellulose-filled copper material extends service life in harsh environments
• Reliable sealing performance prevents fluid and gas leakage in pressurized applications
• Excellent electrical conductivity maintains consistent grounding and electrical connections
• Precision dimensional accuracy with 12.2mm ID and 15.9mm OD ensures perfect fit for M12 screws
• DIN 7603 compliance guarantees consistent quality and interchangeability in industrial assemblies
• RoHS 3 environmental compliance meets strict regulatory requirements for hazardous substances
• Optimized thickness range (1.8-2.2mm) provides ideal compression and load distribution characteristics

Professional Applications & Engineering Value

This M12 metric copper flat washer delivers critical engineering solutions where standard steel washers fail. The cellulose-filled copper composition provides exceptional corrosion resistance while maintaining vital electrical conductivity, making it ideal for electrical enclosures, automotive systems, and marine applications. The material's natural sealing properties effectively prevent fluid and gas leakage in hydraulic and pneumatic systems. Manufactured to DIN 7603 standards, these washers ensure precise dimensional stability and reliable performance under varying thermal conditions. Their RoHS 3 compliance makes them suitable for regulated industries requiring environmentally conscious components, while the copper construction offers superior thermal conductivity for heat management in engine and machinery applications.

Specification Summary & Compliance

This flat washer features precise metric dimensions with 12.2mm inner diameter and 15.9mm outer diameter, specifically engineered for M12 screw applications. The washer conforms to DIN 7603 manufacturing standards, ensuring dimensional accuracy and mechanical consistency. It is fully RoHS 3 (2015/863/EU) compliant, meeting current environmental regulations for hazardous substance restrictions. The cellulose-filled copper construction provides consistent material properties throughout the thickness range of 1.8-2.2mm, delivering reliable performance in industrial fastening systems.