S-93412A447 0.29" ID x 0.562" OD Rubber Sealing Washers

Key Features & Benefits at a Glance

• Exceptional temperature resilience for reliable performance in environments ranging from -10°F to 400°F, preventing failure under thermal stress.
• Superior chemical resistance from Viton® Fluoroelastomer material, ensuring longevity when exposed to harsh industrial fluids and solvents.
• Optimized sealing and load distribution with a precise 5/16" screw fit (0.29" ID, 0.562" OD) and controlled thickness (0.052-0.072"), reducing leakage and component wear.
• Consistent durability and flexibility due to Durometer 75A hardness, maintaining seal integrity under vibration and pressure without cracking.
• Compliance with stringent environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries and global markets.
• Black color stability for easy identification and resistance to UV or ozone degradation in outdoor or high-exposure settings.

Professional Applications & Engineering Value

This Viton® Fluoroelastomer flat washer is engineered to address critical challenges in high-temperature and chemically aggressive environments, such as automotive, aerospace, and chemical processing systems. Its fluoroelastomer rubber construction provides an impermeable seal that resists swelling, compression set, and degradation from oils, fuels, and acids—common causes of equipment downtime. The precise inch system dimensions (0.29" ID, 0.562" OD) ensure a snug fit on 5/16" screws, minimizing gaps and enhancing sealing efficiency in pumps, valves, and machinery. By withstanding extreme thermal cycles from -10°F to 400°F, it eliminates the need for frequent replacements, reducing maintenance costs and boosting operational reliability in demanding industrial applications.

Specification Summary & Compliance

This flat washer adheres to inch system measurement standards with an inner diameter of 0.29", outer diameter of 0.562", and thickness range of 0.052-0.072" for consistent fit on 5/16" screws. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming the absence of restricted substances. The material, Viton® Fluoroelastomer Rubber with Durometer 75A hardness, is manufactured to deliver precise dimensional stability and performance across its specified temperature range, supporting use in regulated and high-performance sectors.