S-90133A108 1.375" ID x 2.5" OD Rubber Sealing Washers

Key Features & Benefits at a Glance

• Superior vibration damping with Neoprene rubber construction to reduce noise and prevent fastener loosening in dynamic applications
• Excellent sealing performance creates reliable moisture and dust barriers in industrial assemblies
• Wide temperature tolerance from -20°F to 180°F maintains performance in both cold and moderate heat environments
• Optimal hardness balance with Durometer 55A rating provides both flexibility for sealing and durability for repeated use
• Precise dimensional fit with 1.375" ID and 2.5" OD ensures proper alignment and distribution for 1 1/4" fasteners
• Regulatory compliance assurance with RoHS 3 and REACH compliance meets international environmental and safety standards
• Consistent thickness control between 0.105-0.145" ensures reliable performance and predictable compression behavior

Professional Applications & Engineering Value

This neoprene rubber flat washer delivers critical engineering solutions where standard metal washers fall short. The Durometer 55A hardness provides the ideal balance between compression set resistance and sealing capability, making it perfect for vibration damping in machinery, electrical enclosures, and automotive applications. The black Neoprene material offers excellent resistance to weathering, ozone, and moderate chemicals while maintaining its sealing performance across a broad temperature range from -20°F to 180°F. Engineers specify these industrial washers to prevent liquid ingress, reduce maintenance frequency, and extend equipment service life in demanding environments where both environmental protection and mechanical stability are required.

Specification Summary & Compliance

This flat washer features precise inch dimensions with 1.375" inner diameter and 2.5" outer diameter, manufactured to consistent thickness standards between 0.105-0.145". The product maintains RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance with the latest substance restrictions, ensuring environmental responsibility and global market acceptance. Designed for use with 1 1/4" fasteners, these washers provide reliable performance while meeting international regulatory requirements for industrial components.