S-93783A029 0.24" ID x 0.505" OD High-Pressure Bonded Sealing Washers For Screw Heads

Key Features & Benefits at a Glance

• Superior sealing performance with Buna-N rubber bonded to metal, preventing leaks in demanding fluid and gas applications
• Exceptional pressure resistance handling up to 5000 PSI for fluids and 200 PSI for gases, ensuring reliable operation in high-pressure systems
• Wide temperature tolerance from -40°F to 225°F, maintaining seal integrity in extreme thermal environments
• Durable zinc-plated steel construction with Rockwell B71 hardness providing corrosion resistance and long service life
• Precision dimensional fit with 0.24" ID and 0.505" OD designed specifically for 1/4" screws, ensuring proper installation and load distribution
• Optimal seal performance with Durometer 55A Buna-N rubber offering the perfect balance of flexibility and compression resistance
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe, environmentally responsible industrial use

Professional Applications & Engineering Value

This metal bonded washer combines the structural strength of zinc-plated steel with the sealing reliability of Buna-N rubber to solve critical industrial challenges. The bonded design eliminates the need for separate components, reducing assembly time while providing a permanent, leak-proof seal that withstands vibration and thermal cycling. Engineered for 1/4" screw applications in hydraulic systems, pneumatic equipment, and industrial machinery, this washer prevents fluid and gas leakage under extreme pressures up to 5000 PSI. The black Buna-N seal maintains flexibility across a broad temperature range (-40°F to 225°F), making it ideal for outdoor equipment, automotive systems, and processing machinery where environmental conditions vary significantly. This integrated solution reduces maintenance frequency and prevents costly downtime in demanding industrial environments.

Specification Summary & Compliance

This metal bonded washer features precise inch system dimensions with 0.24" internal diameter and 0.505" outer diameter, specifically engineered for 1/4" screw size applications. The construction combines zinc-plated steel with Rockwell B71 hardness and Buna-N rubber seal rated at Durometer 55A. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and workplace safety. Performance specifications include temperature range of -40°F to 225°F, maximum pressure rating of 5000 PSI for fluids and 200 PSI for gases, providing reliable operation across diverse industrial applications.