S-93650A390 0.53" ID x 0.75" OD Moisture-Resistant Cushioning Washers

Key Features & Benefits at a Glance

• Superior sealing performance with clear polyurethane rubber construction that conforms to surfaces for leak-proof connections
• Excellent vibration resistance thanks to the 70A durometer hardness that absorbs shocks and prevents fastener loosening
• Wide temperature tolerance from -10°F to 150°F maintains flexibility and performance in varying environmental conditions
• Precise dimensional fit with 0.53" ID specifically engineered for 1/2" screws, ensuring proper alignment and distribution of load
• Chemical and environmental resistance through polyurethane material properties that withstand exposure to oils, solvents, and moisture
• Regulatory compliance assurance with RoHS 3 and REACH compliance for international market access and environmental safety
• Optical clarity advantage allowing visual inspection of underlying surfaces and components during maintenance or quality checks

Professional Applications & Engineering Value

This clear polyurethane rubber flat washer delivers exceptional engineering value in demanding industrial environments where both sealing integrity and vibration dampening are critical. The Durometer 70A hardness provides the ideal balance between flexibility and compression resistance, creating reliable seals while preventing fastener loosening in high-vibration machinery. The temperature resistance from -10°F to 150°F ensures consistent performance across seasonal changes and industrial processes. These flat washers are particularly valuable in applications requiring visual inspection capabilities, such as transparent enclosures, fluid systems, and precision equipment where monitoring underlying components is essential. The inch system measurements and precise 0.53" ID ensure perfect compatibility with standard 1/2" fasteners, eliminating installation issues and reducing maintenance downtime in industrial settings.

Specification Summary & Compliance

This polyurethane rubber flat washer features precise dimensional specifications with 0.53" inner diameter, 0.75" outer diameter, and thickness ranging from 0.053" to 0.073". Manufactured to exacting standards for 1/2" screw applications, it maintains consistent performance with 70A durometer hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and international market acceptance. The washer operates effectively within a temperature range of -10°F to 150°F, making it suitable for various industrial environments while maintaining its sealing and vibration-resistant properties.