S-90133A005 0.12" ID x 0.25" OD Rubber Sealing Washers

Key Features & Benefits at a Glance

• Superior sealing performance with neoprene rubber construction that effectively blocks moisture, dust, and contaminants in demanding environments.
• Excellent vibration dampening due to the 55A durometer hardness, protecting screw connections from loosening under dynamic loads.
• Reliable temperature resistance from -20°F to 180°F, ensuring consistent performance and material integrity across a wide operational range.
• Precise dimensional fit with a 0.12" ID and 0.25" OD designed specifically for No. 6 screws, providing easy installation and a secure interface.
• Enhanced durability and longevity from the flexible yet tough neoprene material, which resists compression set and maintains its sealing force over time.
• Full regulatory compliance with RoHS 3 and REACH standards, making it suitable for use in regulated industries and global markets.
• Versatile industrial application thanks to its black color and flat profile, offering a professional appearance and reliable performance in machinery, electronics, and assemblies.

Professional Applications & Engineering Value

This neoprene rubber flat washer is engineered to address common industrial challenges such as fluid ingress, component vibration, and thermal expansion. The Durometer 55A material provides an optimal balance of flexibility and resilience, creating a reliable seal that prevents leaks in plumbing, HVAC, and automotive systems. Its vibration-resistant properties are critical for maintaining bolt preload in machinery and equipment subject to constant motion or shock, reducing maintenance needs and downtime. The temperature range of -20°F to 180°F ensures performance stability in both cold storage environments and heated industrial settings. Designed for No. 6 screws, this flat washer offers precise fitment for electrical enclosures, panel fastening, and general assembly, delivering long-term sealing and protection against environmental factors.

Specification Summary & Compliance

This washer features an ID of 0.12" and OD of 0.25" with a thickness range of 0.047-0.077", ensuring dimensional accuracy for standard inch-based assemblies. It is manufactured from neoprene rubber with a Durometer 55A hardness and is supplied in black. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to strict environmental and safety standards for hazardous substances.