S-93303A107 0.5" ID x 0.875" OD Rubber Sealing Washers

Key Features & Benefits at a Glance

• Exceptional temperature resilience for reliable performance in environments ranging from -20°F to 460°F, preventing material degradation under thermal stress.
• Superior vibration damping and sealing thanks to the Aramid Fabric/Buna-N Rubber composite and Durometer 70A hardness, reducing loosening and leakage in dynamic assemblies.
• Enhanced durability and wear resistance from the robust Aramid Fabric reinforcement, extending service life in high-friction applications.
• Precise fit for 1/2" screws with 0.5" ID and 0.875" OD, ensuring easy installation and consistent load distribution.
• Chemical and environmental resistance provided by Buna-N Rubber, ideal for exposure to oils, solvents, and moisture.
• RoHS 3 compliance guarantees adherence to environmental safety standards, supporting sustainable and safe industrial operations.
• Distinct green color for quick identification and inventory management in complex assemblies.

Professional Applications & Engineering Value

This flat washer combines Aramid Fabric for structural integrity and Buna-N Rubber for flexibility, addressing critical challenges in high-temperature and high-vibration settings. Its composite design effectively seals against fluids and dampens vibrations, preventing fastener failure in machinery, automotive, and aerospace systems. The Durometer 70A hardness ensures optimal compression without brittleness, making it ideal for industrial washers used in engines, pumps, and electrical enclosures where thermal cycling and mechanical stress are common. By maintaining performance from -20°F to 460°F, it reduces maintenance needs and enhances reliability in demanding screw applications.

Specification Summary & Compliance

This washer features an ID of 0.5", OD of 0.875", and thickness of 0.054-0.070", designed for use with 1/2" screw sizes in inch system measurements. It complies with RoHS 3 (2015/863/EU) standards, ensuring it is free from hazardous substances. The material composition and dimensional accuracy support consistent performance in various industrial environments, adhering to general engineering specifications for flat washers.