S-90131A642 0.65" ID x 0.938" OD Abrasion-Resistant Cushioning Washers

Key Features & Benefits at a Glance

• Superior vibration dampening and sealing with SBR rubber construction, reducing equipment wear and preventing loosening in demanding applications
• Excellent chemical and environmental resistance for reliable performance in various industrial settings, protecting your assembly from degradation
• Optimized dimensional fit with a 0.65" ID and 0.938" OD, ensuring a perfect seal and load distribution for 5/8" screws
• Consistent, firm cushioning provided by the Durometer 70A hardness, offering the ideal balance of flexibility and load-bearing capacity
• Enhanced structural integrity and tear resistance due to the polyester fiber filler, extending the washer's service life under stress
• Reliable performance in moderate heat with a maximum temperature rating of 170°F, suitable for a wide range of operational environments
• Guaranteed regulatory compliance and material safety, meeting RoHS 3 and REACH standards for use in regulated industries

Professional Applications & Engineering Value

This SBR rubber flat washer is engineered to solve critical challenges in industrial assembly and maintenance. Its SBR rubber material provides an effective seal against moisture, dust, and many chemicals, preventing corrosion and contamination in sensitive equipment. The inclusion of polyester fiber filler significantly enhances its durability, resisting deformation and tearing under repeated load cycles—a common failure point for standard washers. With a Durometer 70A hardness, it delivers optimal compression and recovery, making it ideal for applications requiring vibration isolation and noise reduction, such as in machinery mounts, automotive components, and electrical enclosures. Its precise 0.65" ID and 0.938" OD ensure a perfect fit for 5/8" screw fastenings, providing a reliable, long-lasting solution for heavy-duty flat washer needs.

Specification Summary & Compliance

This washer conforms to Inch system measurements with an Inside Diameter (ID) of 0.65", Outside Diameter (OD) of 0.938", and a Thickness range of 0.047-0.077". It is manufactured from SBR Rubber with a Durometer 70A hardness and reinforced with polyester fiber filler. The product is rated for a maximum temperature of 170°F. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets the latest environmental and safety standards for industrial components.