S-93650A280 0.656" ID x 3" OD Moisture-Resistant Cushioning Washers

Key Features & Benefits at a Glance

• Superior chemical resistance for reliable performance in harsh industrial environments
• Excellent temperature resilience maintains integrity from -10°F to 150°F
• Optimal 70A hardness provides ideal balance of flexibility and sealing pressure
• Crystal clear polyurethane construction allows for visual inspection and discreet applications
• Precise 0.656" ID and 3" OD dimensions ensure perfect fit for 5/8" screw applications
• Durable polyurethane material offers extended service life compared to standard rubber washers
• Full regulatory compliance with RoHS 3 and REACH standards for global acceptance

Professional Applications & Engineering Value

This clear polyurethane rubber flat washer delivers exceptional engineering value in demanding applications where visibility, chemical resistance, and reliable sealing are paramount. The 70A durometer hardness provides the perfect balance between compression set resistance and sealing capability, preventing fluid ingress while maintaining bolt tension. Ideal for industrial equipment, food processing machinery, and chemical handling systems, the transparent design allows operators to monitor joint integrity without disassembly. The polyurethane material outperforms standard rubber in resistance to oils, solvents, and abrasion, significantly extending maintenance intervals in heavy-duty applications. With its precise 0.656" ID engineered specifically for 5/8" screw size fasteners, this washer eliminates installation errors and ensures consistent performance across production lines.

Specification Summary & Compliance

This flat washer features precise dimensional specifications with 0.656" inner diameter and 3" outer diameter, designed specifically for 5/8" screw applications. The 0.110-0.140" thickness range ensures proper compression and sealing performance. Manufactured from clear polyurethane rubber with 70A durometer hardness, the product maintains compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, making it suitable for global industrial markets and environmentally conscious applications.