S-93783A005 0.102" ID x 0.25" OD High-Pressure Bonded Sealing Washers For Screw Heads

Key Features & Benefits at a Glance

• Superior Sealing Performance: Buna-N rubber seal with Durometer 60A hardness ensures reliable, leak-proof connections under high-pressure conditions.
• Exceptional Pressure Resistance: Withstands up to 7000 PSI for fluids and 200 PSI for gases, ideal for demanding hydraulic and pneumatic systems.
• Broad Temperature Tolerance: Operates effectively from -10°F to 240°F, maintaining seal integrity in varied thermal environments.
• Enhanced Durability: Zinc-plated steel construction with Rockwell B105 hardness provides excellent corrosion resistance and mechanical strength.
• Precision Fit for No. 4 Screws: 0.102" ID and 0.25" OD ensure accurate alignment and secure fastening in critical assemblies.
• Versatile Industrial Application: Metal bonded design combines metal's structural support with rubber's sealing capability for multi-purpose use.
• Long-Term Reliability: Black Buna-N seal and zinc plating offer consistent performance in harsh industrial settings.

Professional Applications & Engineering Value

This metal bonded washer is engineered to address common sealing challenges in industrial applications where fluid and gas containment is critical. The zinc-plated steel body provides robust structural support, while the Buna-N rubber seal (Durometer 60A) ensures a tight, resilient barrier against leaks. Ideal for use in hydraulic systems, pneumatic equipment, and machinery requiring high-pressure resistance up to 7000 PSI, this washer prevents failure in extreme conditions. Its ability to perform across a wide temperature range from -10°F to 240°F makes it suitable for outdoor or thermally variable environments, reducing maintenance needs and enhancing assembly longevity. By integrating metal strength with rubber flexibility, it solves issues of vibration loosening and seal degradation, offering a reliable sealing solution for No. 4 screw fastenings in precision engineering projects.

Specification Summary & Compliance

This bonded washer features precise dimensions: 0.102" ID, 0.25" OD, and thickness of 0.035-0.045", designed for No. 4 screw sizes in the inch system. It adheres to standard manufacturing tolerances and is constructed from zinc-plated steel with a hardness of Rockwell B105, ensuring consistent performance. The Buna-N seal meets typical industry specifications for elasticity and chemical resistance. Compliant with general industrial standards, it supports quality assurance in applications requiring reliable pressure and temperature handling, though specific certifications like RoHS or ASME should be verified per project requirements.