S-93786A150 7.8 mm ID x 13.5 mm OD High-Pressure Bonded Sealing Washers For Screw Heads

Key Features & Benefits at a Glance

• Exceptional sealing performance with Buna-N rubber bonded to steel, preventing leaks in demanding industrial environments
• High-pressure resistance up to 7900 PSI for fluids and 200 PSI for gases, ensuring reliable operation in hydraulic and pneumatic systems
• Wide temperature tolerance from -30°F to 220°F, maintaining seal integrity in extreme thermal conditions
• Durable zinc-plated steel construction providing corrosion resistance and extended service life in harsh applications
• Precision metric sizing (M8, 7.8mm ID, 13.5mm OD) for easy integration with standard fasteners and consistent performance
• Optimized material hardness with Rockwell C26 steel and 85A durometer rubber for balanced strength and flexibility
• Cost-effective maintenance solution by reducing downtime and replacement needs in heavy-duty machinery

Professional Applications & Engineering Value

This M8 metal bonded washer combines the structural integrity of zinc-plated steel with the sealing elasticity of Buna-N rubber to address critical industrial challenges. In applications like hydraulic systems, pneumatic controls, and automotive assemblies, it prevents fluid and gas leaks under high-pressure conditions up to 7900 PSI. The metric design ensures precise fit with M8 screws, while the bonded construction eliminates seal displacement during vibration or thermal cycling. With a temperature range from -30°F to 220°F, it performs reliably in outdoor equipment and processing machinery, reducing maintenance costs and enhancing operational safety. Engineers value its Rockwell C26 hardness and 85A durometer seal for consistent performance in demanding environments.

Specification Summary & Compliance

This washer meets metric system standards with precise dimensions: 7.8mm ID, 13.5mm OD, and 1.1-1.4mm thickness for M8 screw compatibility. Manufacturing adheres to industry tolerances for reliable sealing performance. The zinc-plated steel and Buna-N rubber materials comply with RoHS and REACH environmental directives, ensuring safe use in various industrial sectors. Hardness ratings (Rockwell C26 for steel, Durometer 85A for rubber) confirm durability under specified pressure and temperature limits.