S-90131A311 0.5" ID x 3" OD Abrasion-Resistant Cushioning Washers

Key Features & Benefits at a Glance

• Superior vibration dampening with SBR rubber construction and Durometer 70A hardness for reduced equipment wear and noise
• Excellent sealing performance prevents fluid and dust ingress in industrial environments
• High-temperature resistance maintains integrity up to 170°F for reliable operation in heated applications
• Enhanced durability with polyester fiber filler for improved structural stability under compression
• Precise dimensional fit with 0.5" ID specifically engineered for 1/2" screw applications
• Broad surface coverage with 3" OD for superior load distribution and protection
• Environmental compliance with RoHS 3 (2015/863/EU) standards for safe industrial use

Professional Applications & Engineering Value

This SBR rubber flat washer delivers critical engineering solutions for industrial applications requiring reliable sealing and vibration resistance. The Durometer 70A hardness provides optimal flexibility while maintaining structural integrity under compression, making it ideal for machinery, automotive, and HVAC systems where vibration dampening is essential. The polyester fiber reinforcement enhances dimensional stability, preventing deformation under sustained loads. With a maximum temperature rating of 170°F, this washer performs consistently in heated environments while the black SBR rubber material offers excellent resistance to compression set and environmental factors. The precise 0.5" ID ensures perfect compatibility with 1/2" screw applications, providing reliable sealing against moisture, dust, and air infiltration in demanding industrial settings.

Specification Summary & Compliance

This flat washer features inch system dimensions with 0.5" inner diameter, 3" outer diameter, and thickness ranging 0.110-0.140". Manufactured from SBR rubber with Durometer 70A hardness and polyester fiber filler, it's engineered for 1/2" screw applications. The product is RoHS 3 (2015/863/EU) compliant and rated for continuous service up to 170°F maximum temperature, ensuring regulatory compliance and performance reliability in industrial environments.