S-90130A130 0.615" ID x 1.312" OD Rubber Sealing Washers

Key Features & Benefits at a Glance

• Superior Sealing Performance: EPDM rubber construction provides excellent compression set resistance, ensuring reliable long-term seals in demanding industrial environments.
• Broad Temperature Resilience: Maintains flexibility and sealing integrity across a wide operating range from -20°F to 212°F, suitable for various climate conditions.
• Optimized Mechanical Protection: Durometer 55A hardness offers the ideal balance of softness for effective sealing and firmness to withstand mechanical stress and vibration.
• Precision Fit for 5/8" Fasteners: 0.615" ID and 1.312" OD ensure a secure, centered fit on 5/8" screws, preventing misalignment and improving assembly efficiency.
• Environmentally Compliant Manufacturing: RoHS 3 (2015/863/EU) compliance guarantees the washer is free from hazardous substances, meeting global environmental standards.
• Consistent Dimensional Accuracy: 0.110-0.140" thickness tolerance provides uniform compression and reliable performance in repetitive assembly applications.
• Durable Material Longevity: EPDM rubber's inherent resistance to weathering, ozone, and UV exposure ensures extended service life in both indoor and outdoor settings.

Professional Applications & Engineering Value

This EPDM rubber flat washer delivers critical engineering solutions where reliable sealing and vibration dampening are paramount. The black EPDM material excels in applications requiring resistance to compression set, making it ideal for plumbing systems, HVAC assemblies, automotive components, and outdoor equipment where temperature fluctuations from -20°F to 212°F are common. Its Durometer 55A hardness provides sufficient softness to conform to irregular surfaces while maintaining structural integrity under bolt torque. The precise 0.615" ID and 1.312" OD dimensions ensure proper fitment on 5/8" screws, preventing leakage paths in gasketing applications and reducing maintenance frequency in industrial machinery. This flat washer serves as both a sealing component and protective barrier against galvanic corrosion between dissimilar metals.

Specification Summary & Compliance

This flat washer features inch system dimensions with 0.615" inner diameter, 1.312" outer diameter, and thickness ranging 0.110-0.140". Manufactured from EPDM rubber with Durometer 55A hardness, it is engineered for 5/8" screw applications. The product is fully RoHS 3 (2015/863/EU) compliant and rated for continuous service across the specified temperature range of -20°F to 212°F, ensuring regulatory adherence for industrial applications requiring environmental compliance.