S-5916K55 1" ID x 2.5" OD Chemical-Resistant Cushioning Washers

Key Features & Benefits at a Glance

• Superior Sealing Performance: The raised grid pattern creates multiple sealing rings for enhanced leak prevention in demanding industrial environments.
• Excellent Vibration Dampening: Made from Buna-N rubber with a Durometer 63A hardness, this washer effectively absorbs shock and reduces noise from machinery.
• Broad Chemical & Temperature Resistance: Withstands exposure to oils, fuels, and a maximum temperature of 200°F, ensuring long-term reliability.
• Optimized Dimensions for Secure Fit: The 1" ID and 2.5" OD provide a precise fit for 1" screws, offering a large sealing surface area for better load distribution.
• Durable & Consistent Material Properties: The 0.281-0.343" thickness and consistent rubber compound ensure reliable compression and recovery over repeated use.
• Compliant for Global Industrial Use: Meets RoHS 3 and REACH regulations, making it suitable for use in strict regulatory environments.
• Non-Marring & Protective: The soft rubber construction helps prevent damage to mating surfaces while maintaining a tight seal.

Professional Applications & Engineering Value

This Buna-N rubber raised grid washer is engineered to solve critical sealing and isolation challenges in industrial applications. The unique grid pattern increases the sealing force per unit area, providing a more reliable seal against fluids and gases than flat washers, even under variable pressures. Its chemical resistance makes it ideal for use in automotive, hydraulic, and processing equipment where exposure to oils and solvents is common. The material's inherent flexibility and Durometer 63A hardness offer superior vibration dampening, protecting sensitive components and reducing maintenance needs. Its ability to perform consistently up to 200°F ensures operational integrity in thermally demanding settings, making it a vital component for enhancing equipment longevity and preventing costly downtime.

Specification Summary & Compliance

This washer conforms to inch system measurements with an Inner Diameter of 1", Outer Diameter of 2.5", and a Thickness range of 0.281-0.343". The raised grid width is 0.219" and the indented grid width is 0.281", designed for use with a 1" screw size. It is manufactured from Buna-N rubber with a hardness of Durometer 63A. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for use in global markets.