S-90133A420 0.355" ID x 0.812" OD Rubber Sealing Washers

Key Features & Benefits at a Glance

• Superior vibration dampening with 55A Durometer neoprene rubber for reduced noise and equipment wear
• Excellent chemical and environmental resistance for long-lasting performance in harsh industrial settings
• Reliable temperature stability maintaining flexibility and sealing from -20°F to 180°F
• Precise dimensional fit with 0.355" ID and 0.812" OD ensuring proper alignment for 3/8" fasteners
• Consistent compression performance with 0.110-0.140" thickness range for uniform load distribution
• Compliance assurance meeting RoHS 3 and REACH standards for global industrial applications
• Durable black neoprene construction providing excellent weathering and UV resistance

Professional Applications & Engineering Value

This neoprene rubber flat washer delivers critical engineering solutions where standard metal washers fall short. The Durometer 55A hardness provides optimal balance between flexibility and load-bearing capacity, making it ideal for vibration dampening in machinery, electrical enclosures, and automotive assemblies. The chemical-resistant neoprene material withstands exposure to oils, solvents, and weathering while maintaining sealing integrity. With its 0.355" ID and 0.812" OD dimensions, this 3/8 inch washer ensures precise fitment in inch-system applications, preventing loosening under dynamic loads. The broad temperature range from -20°F to 180°F guarantees performance in both freezing environments and heated industrial equipment, eliminating the need for multiple washer types across different operating conditions.

Specification Summary & Compliance

This flat washer features precise inch-system dimensions with 0.355" internal diameter, 0.812" outer diameter, and controlled thickness between 0.110-0.140". Manufactured from neoprene rubber with 55A Durometer hardness, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental and safety standards are met for industrial distribution and use. The product maintains consistent performance across its specified temperature operating range while providing reliable sealing and insulation properties.