S-93781A037 0.319" ID x 0.687" OD High-Pressure Bonded Sealing Washers For Nuts
High-Pressure Bonded Sealing Washers For Nuts
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Basic Information
Dimension Parameters
Material & Strength Parameters
Temperature & Environment Parameters
Installation & Application Parameters
Finish & Compliance Parameters
Seal Parameters
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Key Features & Benefits at a Glance
- Superior leak prevention with Buna-N rubber seal rated for up to 5000 psi fluid pressure, ensuring reliable performance in high-pressure systems
- Exceptional temperature resilience with an operating range from -30°F to 220°F, maintaining seal integrity in varied thermal conditions
- Enhanced corrosion resistance through zinc-plated steel construction, extending service life in harsh industrial environments
- Optimized mechanical strength with Rockwell B71 hardness, providing consistent load distribution and vibration resistance
- Precision dimensional fit with 0.687" OD and 0.319" ID, designed specifically for 5/16" screw applications
- Compliant material safety meeting RoHS 3 and REACH standards, ensuring environmental and regulatory adherence
- Durable seal performance with Durometer 55A Buna-N rubber offering excellent compression set and chemical resistance
Professional Applications & Engineering Value
Engineered for demanding fluid sealing applications, these metal bonded washers combine the structural integrity of zinc-plated steel with the elastic properties of Buna-N rubber seals. The bonded design eliminates separate gasket components, preventing misalignment in high-vibration machinery while providing reliable sealing against hydraulic fluids, oils, and water. Ideal for industrial equipment, automotive assemblies, and fluid power systems, the washer's black Buna-N seal maintains compression across temperature extremes from -30°F to 220°F, solving common leakage issues in pumps, valves, and flange connections where pressure fluctuations and thermal cycling occur.
Specification Summary & Compliance
Precision manufactured to inch system dimensions: 0.319" ID, 0.687" OD, and 0.059-0.069" thickness for 5/16" screw applications. Material specifications include zinc-plated steel with Rockwell B71 hardness and Buna-N rubber seal at Durometer 55A. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to international environmental and safety standards for industrial components.
