S-90131A628 0.344" ID x 0.625" OD Abrasion-Resistant Cushioning Washers
Abrasion-Resistant Cushioning Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Temperature & Environment Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior vibration dampening with SBR rubber construction reduces equipment wear and noise in demanding industrial environments
- Enhanced structural integrity through polyester fiber filler reinforcement prevents deformation under heavy loads
- Reliable sealing performance maintains consistent compression across the 0.047-0.077" thickness range
- Optimal chemical resistance with Durometer 70A hardness balancing flexibility and durability
- Precision dimensional fit with 0.344" ID specifically engineered for 5/16" screw applications
- Thermal stability maintaining performance in temperatures up to 170°F
- Regulatory compliance assurance with RoHS 3 and REACH compliance for global market acceptance
Professional Applications & Engineering Value
These SBR rubber flat washers deliver critical engineering solutions where conventional washers fail. The black rubber composition with polyester fiber filler creates an ideal balance between compression set resistance and load distribution, making them perfect for vibration dampening in machinery mounts and sealing applications in fluid systems. The precise 0.625" OD and 0.344" ID ensure proper seating on 5/16" screw size fasteners, while the Durometer 70A hardness provides sufficient compression for effective gasketing without permanent deformation. These industrial rubber washers solve common challenges in automotive assembly, electrical enclosures, and manufacturing equipment where thermal cycling and mechanical stress demand reliable performance.
Specification Summary & Compliance
Manufactured to inch system specifications with 0.344" inner diameter, 0.625" outer diameter, and thickness tolerance of 0.047-0.077". Constructed from SBR rubber with polyester fiber filler reinforcement and Durometer 70A hardness rating. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental and safety standards are met for industrial applications. Maximum service temperature rated at 170°F.
