S-90131A604 0.281" ID x 0.734" OD Abrasion-Resistant Cushioning Washers

Key Features & Benefits at a Glance

• Superior vibration damping and sealing with SBR rubber construction, reducing equipment wear and preventing leaks
• Excellent dimensional stability thanks to polyester fiber filler, maintaining shape under compression for reliable performance
• Optimal flexibility and load distribution with Durometer 70A hardness, protecting surfaces from damage and loosening
• Reliable high-temperature resistance up to 170°F, ensuring consistent performance in demanding industrial environments
• Precise fit for 1/4" fasteners with 0.281" ID and 0.734" OD, providing easy installation and secure positioning
• Full regulatory compliance with RoHS 3 and REACH standards, meeting global environmental and safety requirements
• Versatile thickness range from 0.047" to 0.077", accommodating various gasketing and spacing needs in inch-system applications

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these SBR rubber flat washers deliver exceptional sealing and vibration isolation where metal washers fail. The black SBR material with polyester fiber reinforcement resists compression set, maintaining seal integrity under cyclic loading in machinery, automotive, and electrical enclosures. With a 1/4" screw size compatibility and 0.734" OD, they provide broad surface coverage to prevent fastener embedding in soft materials. The 70A durometer hardness offers the ideal balance between conformability and structural support, solving common issues like fluid leakage, noise reduction, and thermal expansion mismatches in high-temperature applications up to 170°F.

Specification Summary & Compliance

This flat washer meets inch-system dimensional requirements with 0.281" inner diameter, 0.734" outer diameter, and thickness ranging 0.047-0.077". Manufactured from SBR rubber with polyester fiber filler at Durometer 70A hardness, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to international environmental and safety standards for industrial components.