S-90133A109 1.437" ID x 3" OD Rubber Sealing Washers

Key Features & Benefits at a Glance

• Superior sealing performance with neoprene rubber construction to prevent fluid and gas leaks in industrial assemblies
• Excellent vibration dampening properties to reduce equipment wear and maintain fastener integrity under dynamic loads
• Wide temperature tolerance from -20°F to 180°F for reliable operation in diverse environmental conditions
• Optimized dimensional fit with 1.437" ID specifically designed for 1 1/2" screw sizes to ensure proper alignment
• Consistent compression resistance with Durometer 55A hardness providing ideal balance between flexibility and load distribution
• Enhanced durability with black neoprene material offering resistance to weathering, oils, and industrial chemicals
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries

Professional Applications & Engineering Value

This neoprene rubber flat washer delivers critical engineering solutions where standard washers fail. The Durometer 55A hardness provides optimal compression set resistance while maintaining sufficient flexibility for effective sealing in flange connections, machinery bases, and piping systems. The 3" OD creates a substantial bearing surface that distributes clamping forces evenly, preventing surface damage and maintaining joint integrity. In vibration-prone applications such as motor mounts, pump assemblies, and heavy equipment, the neoprene material absorbs harmonic oscillations that could loosen fasteners over time. The temperature resistance from -20°F to 180°F ensures performance stability in both outdoor installations and high-temperature industrial environments, while the black neoprene composition resists degradation from UV exposure, oils, and mild chemicals commonly encountered in manufacturing and processing facilities.

Specification Summary & Compliance

This heavy-duty flat washer features precise inch system dimensions with 1.437" inner diameter compatible with 1 1/2" screw sizes and 3" outer diameter for optimal load distribution. The thickness tolerance of 0.105-0.145" ensures consistent performance across production batches. Manufactured from premium neoprene rubber with Durometer 55A hardness rating, the washer maintains its mechanical properties across the specified temperature range of -20°F to 180°F. The product fully complies with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations regarding chemical safety, making it suitable for use in regulated industries including automotive, construction, and industrial equipment manufacturing.