S-90131A605 0.406" ID x 0.875" OD Abrasion-Resistant Cushioning Washers

Key Features & Benefits at a Glance

• Superior vibration dampening and sealing with SBR rubber construction, ideal for noise reduction and fluid containment in machinery.
• Excellent dimensional stability provided by the polyester fiber filler, preventing deformation under load for reliable long-term performance.
• Wide temperature resilience up to 170°F, ensuring consistent performance in various industrial thermal environments.
• Optimized fit for 5/16" screws with a precise 0.406" ID, facilitating quick and secure installation in assembly lines.
• Consistent 70A Durometer hardness offers the perfect balance of flexibility and firmness for effective load distribution.
• Full regulatory compliance with RoHS 3 and REACH standards, making them safe for use in global markets and sensitive applications.
• Durable black SBR material resists environmental factors, providing long service life and reducing maintenance frequency.

Professional Applications & Engineering Value

This SBR rubber flat washer is engineered to solve critical challenges in industrial assembly and maintenance. The SBR (Styrene Butadiene Rubber) material, reinforced with polyester fiber, delivers exceptional resistance to compression set and wear, making it ideal for high-vibration environments like automotive mounts, electrical enclosures, and heavy machinery. Its 0.406" ID and 0.875" OD ensure a precise fit for 5/16" screws, preventing loosening and providing a reliable seal against moisture, dust, and air leaks. The Durometer 70A hardness offers optimal cushioning without sacrificing structural integrity, while the ability to withstand temperatures up to 170°F ensures performance in demanding conditions, reducing downtime and replacement costs.

Specification Summary & Compliance

This flat washer conforms to standard inch system dimensions with an Inner Diameter of 0.406", Outer Diameter of 0.875", and a Thickness range of 0.047-0.077". It is manufactured from SBR rubber with polyester fiber filler and a Durometer 70A hardness rating. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for industrial use.