S-93303A121 0.125" ID x 0.375" OD Rubber Sealing Washers

Key Features & Benefits at a Glance

• Exceptional temperature resistance maintains performance from 0°F to 450°F, ideal for high-heat industrial environments
• Superior sealing and vibration dampening from the Aramid Fabric/Buna-N Rubber composite, reducing equipment wear and maintenance
• Chemical and abrasion resistance ensures long-term durability in harsh operating conditions
• Precise dimensional fit with 0.125" ID and 0.375" OD for reliable installation on No. 4 screws
• Consistent thickness control (0.026-0.036") provides uniform load distribution and fastener stability
• Full regulatory compliance with RoHS 3 and REACH standards for safe use in global markets
• Easy visual identification with green color coding for quick inventory management

Professional Applications & Engineering Value

This high-temperature flat washer combines Aramid Fabric for structural integrity and Buna-N Rubber for elastic recovery, creating a composite washer that solves critical challenges in demanding applications. It effectively seals against fluids and gases while dampening vibrations in machinery, automotive, and aerospace assemblies. The material composition resists degradation from oils, chemicals, and extreme thermal cycling, preventing loosening under dynamic loads. Engineered for No. 4 screw fastening systems, it ensures reliable performance in electrical enclosures, engine compartments, and industrial equipment where temperature fluctuations and corrosive environments compromise standard washers.

Specification Summary & Compliance

This flat washer features precise inch dimensions: 0.125" ID, 0.375" OD, and 0.026-0.036" thickness range for consistent fit. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring restriction of hazardous substances. Manufactured to industrial standards for high-temperature applications with verified performance across its specified temperature range.