S-97725A238 1.312" ID x 1.625" OD Metal Sealing Washers

Key Features & Benefits at a Glance

• Superior electrical and thermal conductivity from pure copper construction, ideal for grounding and heat dissipation applications
• Excellent corrosion resistance for long-lasting performance in humid, chemical, and outdoor industrial environments
• Precise dimensional fit with 1.312" ID and 1.625" OD ensuring secure seating on 1 1/4" screws without slippage
• Optimized load distribution with 0.112-0.13" thickness range to prevent surface damage and fastener loosening under vibration
• Full regulatory compliance with RoHS 3 and REACH standards, guaranteeing safe use in regulated industries
• Durable flat washer design providing reliable sealing and spacing in high-pressure mechanical assemblies
• Broad industrial compatibility for electrical systems, plumbing, automotive, and heavy machinery applications

Professional Applications & Engineering Value

This copper flat washer delivers critical engineering solutions where corrosion resistance and electrical conductivity are paramount. The 1.312" ID and 1.625" OD dimensions ensure perfect alignment with 1 1/4" screw size fasteners, eliminating gaps that cause electrolytic corrosion in dissimilar metal connections. In electrical substations, marine equipment, and chemical processing plants, the copper material maintains stable performance under thermal cycling and environmental stress. The flat washer profile distributes clamping force evenly across 0.112-0.13" thickness, preventing joint failure in vibrating machinery while providing essential galvanic protection to steel fasteners.

Specification Summary & Compliance

Manufactured to standard inch system flat washer dimensions with precise ID/OD tolerances for Class 2A fit. Constructed from commercial grade copper meeting industry standards for flat washer applications. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations regarding hazardous substances. Material properties ensure consistent performance across temperature ranges without hardening or degradation.