S-90131A104 0.5" ID x 1.375" OD Abrasion-Resistant Cushioning Washers

Key Features & Benefits at a Glance

• Superior vibration dampening and sealing with SBR rubber construction and Durometer 70A hardness for reliable performance in demanding environments.
• Enhanced durability and tear resistance due to the polyester fiber filler, extending service life in heavy-duty applications.
• Excellent chemical resistance protects against a wide range of industrial fluids, oils, and solvents, maintaining integrity.
• Stable performance at elevated temperatures, withstanding up to 170°F (approx. 77°C) without significant degradation.
• Precise dimensional fit with a 0.5" ID designed for 1/2" screws and a 1.375" OD for optimal load distribution.
• Consistent thickness ranging from 0.110" to 0.140" ensures uniform compression and a reliable seal.
• Safe for regulated industries with full compliance to RoHS 3 (2015/863/EU), ensuring no hazardous substances are used.

Professional Applications & Engineering Value

This SBR rubber flat washer is engineered to solve critical challenges in industrial assembly and machinery. The Durometer 70A hardness provides an ideal balance of flexibility and firmness, effectively absorbing shock and reducing noise in vibrating equipment. Its black SBR rubber material, reinforced with polyester fiber filler, offers exceptional resistance to abrasion and compression set, making it perfect for use in automotive, plumbing, and electrical enclosures. The washer’s ability to maintain a tight seal under high temperatures up to 170°F and exposure to chemicals prevents leaks and component failure, ensuring long-term reliability in industrial applications. This makes it a go-to choice for engineers seeking a durable, RoHS 3 compliant sealing solution that meets rigorous performance standards.

Specification Summary & Compliance

This flat washer adheres to inch system measurements with an Inside Diameter (ID) of 0.5" for use with 1/2" screws, an Outside Diameter (OD) of 1.375", and a Thickness of 0.110-0.140". Manufactured from SBR rubber with a Durometer 70A hardness and polyester fiber filler for enhanced strength. It is fully compliant with RoHS 3 (2015/863/EU) regulations, ensuring it is free from hazardous substances, and rated for a maximum temperature of 170°F.