S-90131A633 0.348" ID x 1.5" OD Abrasion-Resistant Cushioning Washers

Key Features & Benefits at a Glance

• Superior vibration absorption and sealing with SBR rubber construction and Durometer 70A hardness for reliable performance in demanding environments
• Enhanced structural integrity through polyester fiber filler reinforcement, resisting deformation under load
• Precise dimensional fit with 0.348" ID and 1.5" OD ensuring secure placement on 5/16" screws
• Consistent performance across temperature variations with a maximum operating temperature of 170°F
• Durable, long-lasting service life thanks to black SBR rubber material resistant to wear and environmental factors
• Compliance with international environmental standards including RoHS 3 and REACH for safe, responsible sourcing
• Versatile thickness range from 0.047" to 0.077" accommodating slight variations in assembly requirements

Professional Applications & Engineering Value

This SBR rubber flat washer delivers critical sealing and vibration damping in industrial settings where equipment longevity is paramount. The Durometer 70A hardness provides optimal flexibility without sacrificing load distribution, making it ideal for machinery, automotive assemblies, and electrical enclosures using 5/16" screws. The inclusion of polyester fiber filler enhances tear resistance, preventing failure in high-stress applications. Its black rubber composition offers consistent performance up to 170°F, ensuring reliability in environments with thermal fluctuations. By combining precise dimensions (0.348" ID x 1.5" OD) with robust material properties, this washer solves common issues like loosening fasteners and fluid ingress, reducing maintenance cycles and improving operational safety.

Specification Summary & Compliance

This flat washer features inch system dimensions with an inner diameter of 0.348", outer diameter of 1.5", and thickness ranging from 0.047" to 0.077", designed specifically for 5/16" screw sizes. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial components. The material specification includes SBR rubber with Durometer 70A hardness and polyester fiber filler, manufactured to provide consistent performance within stated temperature limits.