S-90131A643 0.688" ID x 2" OD Abrasion-Resistant Cushioning Washers

Key Features & Benefits at a Glance

• Superior sealing performance with Durometer 70A hardness providing optimal compression and vibration dampening for industrial applications
• Enhanced durability and strength through polyester fiber reinforcement that prevents deformation under heavy loads
• Excellent chemical resistance thanks to SBR rubber construction, ideal for environments with exposure to oils and solvents
• Reliable high-temperature operation maintaining performance integrity up to 170°F in demanding conditions
• Precise dimensional compatibility with 2" OD and 0.688" ID ensuring perfect fit for 5/8" screw applications
• Full regulatory compliance meeting RoHS 3 and REACH standards for safe use across global markets
• Versatile black rubber construction offering consistent performance in various industrial sealing and gasketing applications

Professional Applications & Engineering Value

This SBR rubber flat washer delivers exceptional engineering value through its specialized material composition and reinforced structure. The Durometer 70A hardness provides the ideal balance between flexibility and compression resistance, solving common industrial challenges like vibration-induced loosening and inadequate sealing. The polyester fiber reinforcement addresses deformation issues under sustained pressure, while the SBR rubber material offers reliable chemical resistance against oils and industrial fluids. These flat washers are engineered for demanding applications including machinery assembly, automotive systems, and industrial equipment where temperature fluctuations up to 170°F and chemical exposure are common concerns. The precise 2" OD and 0.688" ID dimensions ensure proper fitment for 5/8" screw size applications, preventing misalignment and ensuring consistent sealing performance across industrial operations.

Specification Summary & Compliance

This heavy-duty SBR rubber flat washer features inch system dimensions with 2" outer diameter, 0.688" inner diameter specifically engineered for 5/8" screw applications, and thickness ranging from 0.105" to 0.145". The washer maintains Durometer 70A hardness for consistent performance and incorporates polyester fiber filler material for enhanced structural integrity. Manufacturing compliance includes full adherence to RoHS 3 (2015/863/EU) standards and REACH (EC 1907/2006) regulations updated through June 14, 2023, covering 235 Substances of Very High Concern, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.