S-97725A245 30 mm ID x 38 mm OD Metal Sealing Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance for extended service life in harsh environments and chemical exposure
• Excellent electrical conductivity ensures reliable performance in electrical grounding and connection applications
• Precise metric dimensions (30mm ID x 38mm OD) guarantee perfect fit with M27 fasteners and uniform load distribution
• Heavy-duty 2.8-3.2mm thickness provides enhanced mechanical strength and vibration resistance
• Environmentally compliant construction meets RoHS 3 and REACH standards for safe industrial use
• Natural copper malleability creates effective sealing surfaces without galling or seizing
• Maintenance-free performance due to copper's inherent anti-corrosion properties and durability

Professional Applications & Engineering Value

This M27 metric copper flat washer delivers critical engineering advantages in demanding applications where electrical conductivity and corrosion resistance are paramount. The copper material provides inherent protection against galvanic corrosion while maintaining stable electrical connections in power distribution, grounding systems, and electrical enclosures. Its precise flat washer design with 30mm inner diameter ensures perfect alignment with M27 fasteners, preventing loosening under vibration in industrial machinery, marine equipment, and chemical processing systems. The combination of copper's natural properties and metric dimensional accuracy solves common challenges in electrical applications and corrosive environments where steel washers would deteriorate rapidly, offering engineers a reliable sealing and load distribution solution that maintains performance throughout the product lifecycle.

Specification Summary & Compliance

This flat washer features metric dimensions with 30mm inner diameter, 38mm outer diameter, and 2.8-3.2mm thickness range, engineered for use with M27 screw sizes. Manufactured from high-quality copper material, the washer complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring regulatory compliance for industrial applications. While hardness is not rated, the copper construction provides optimal malleability for effective sealing performance in various engineering applications.