S-90130A270 1.375" ID x 2.5" OD Rubber Sealing Washers

Key Features & Benefits at a Glance

• Superior sealing performance with EPDM rubber construction that maintains flexibility and compression under varying conditions
• Exceptional temperature resistance from -40°F to 212°F (-40°C to 100°C) for reliable operation in extreme environments
• Optimized dimensional compatibility with 1.375" ID perfectly fitting 1 1/4" screws and 2.5" OD providing ample sealing surface
• Consistent compression characteristics with Durometer 60A hardness ensuring proper gasketing without permanent deformation
• Enhanced chemical and weather resistance through EPDM material properties ideal for outdoor and industrial applications
• Regulatory compliance assurance with RoHS 3 and REACH compliance meeting international environmental standards
• Durable black EPDM construction offering excellent ozone, UV, and aging resistance for long service life

Professional Applications & Engineering Value

This EPDM rubber flat washer delivers critical sealing performance in demanding industrial environments where temperature fluctuations and chemical exposure compromise ordinary washers. The Durometer 60A hardness provides ideal compression recovery, maintaining seal integrity under vibration and thermal cycling from -40°F to 212°F. Engineered with precise 1.375" ID and 2.5" OD dimensions in the inch system, it ensures perfect compatibility with 1 1/4" screws while creating an effective barrier against moisture, dust, and mild chemicals. The EPDM material offers superior resistance to weathering, ozone, and aging, making these flat washers ideal for HVAC systems, automotive applications, plumbing installations, and outdoor equipment where reliable sealing is paramount.

Specification Summary & Compliance

This flat washer features precise dimensional specifications with 1.375" inner diameter, 2.5" outer diameter, and thickness ranging from 0.105" to 0.145". Manufactured from black EPDM rubber with Durometer 60A hardness, it maintains consistent performance across the specified temperature range. The product fully complies with RoHS 3 (2015/863/EU) regulations and REACH (EC 1907/2006) standards, ensuring environmental responsibility and safety in industrial applications. Designed specifically for use with 1 1/4" screws in inch-based assembly systems.