S-90131A639 0.531" ID x 1" OD Abrasion-Resistant Cushioning Washers

Key Features & Benefits at a Glance

• Superior vibration damping with SBR rubber construction and 70A durometer hardness for reduced equipment wear and noise
• Excellent sealing performance prevents fluid ingress and contamination in industrial applications
• Reinforced durability with polyester fiber filler material for extended service life under compression
• Wide temperature tolerance maintains performance in environments up to 170°F (76°C)
• Precise dimensional fit with 0.531" ID specifically engineered for 1/2" screw applications
• Regulatory compliance assurance with RoHS 3 and REACH certification for global industrial safety standards
• Corrosion-resistant black rubber provides consistent performance in demanding conditions

Professional Applications & Engineering Value

This SBR rubber flat washer delivers critical engineering solutions for industrial maintenance and equipment assembly. The combination of SBR rubber material with 70A durometer hardness creates an optimal balance between flexibility and compression resistance, making it ideal for vibration damping in machinery mounts and sealing applications where fluid or dust protection is essential. The polyester fiber filler reinforcement prevents deformation under constant load, while the precise 0.531" ID ensures perfect alignment with 1/2" screws in inch-system applications. These industrial washers effectively solve common issues of loosening fasteners and seal degradation in environments experiencing thermal cycling up to 170°F maximum temperature.

Specification Summary & Compliance

This flat washer features inch system dimensions with 0.531" inner diameter, 1" outer diameter, and thickness ranging 0.047-0.077". Manufactured from SBR rubber with Durometer 70A hardness and polyester fiber filler reinforcement. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to international environmental and safety standards for industrial components.