S-90133A102 0.12" ID x 0.312" OD Rubber Sealing Washers

Key Features & Benefits at a Glance

• Superior vibration damping with Durometer 55A hardness, reducing equipment wear and noise in dynamic applications.
• Effective sealing performance using flexible Neoprene Rubber to prevent leaks and resist moisture, oils, and many chemicals.
• Reliable temperature resistance from -20°F to 180°F, ensuring consistent performance in varied industrial environments.
• Precise dimensional fit with a 0.12" ID and 0.312" OD, designed specifically for secure placement on No. 4 screws.
• Durable, compressible design with a thickness range of 0.019-0.043" to accommodate slight variations and maintain seal integrity under pressure.
• Compliance with strict environmental standards, including RoHS 3 and REACH, for safe use in regulated industries and global markets.
• Versatile black Neoprene material offering good weatherability and electrical insulation properties for diverse assembly needs.

Professional Applications & Engineering Value

These Neoprene Rubber Flat Washers are engineered to solve common industrial challenges like vibration-induced loosening and environmental sealing failures. The Durometer 55A hardness provides an optimal balance of flexibility and firmness, absorbing shocks and reducing maintenance in machinery, electronics, and automotive assemblies. The black Neoprene material naturally resists degradation from ozone, weathering, and many fluids, making these flat washers ideal for outdoor equipment, electrical enclosures, and plumbing fixtures. With a precise ID of 0.12" and OD of 0.312" for No. 4 screws, they ensure a snug fit that prevents misalignment and enhances the longevity of fastened joints, even under thermal cycling from -20°F to 180°F.

Specification Summary & Compliance

This flat washer conforms to inch system measurements with an Inside Diameter (ID) of 0.12", Outside Diameter (OD) of 0.312", and Thickness ranging from 0.019" to 0.043". It is manufactured from Neoprene Rubber with a Durometer 55A hardness and is intended for use with No. 4 screw size. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial components.