S-90132A553 0.5" ID x 2.25" OD Plastic Washers

Key Features & Benefits at a Glance

• Superior Electrical Insulation: Hard fiber construction provides excellent non-conductive properties, preventing electrical shorts in sensitive equipment.
• Exceptional Durability: Rockwell R70 hardness rating ensures high resistance to wear, deformation, and compression set under load.
• Reliable Thermal Performance: Withstands temperatures up to 230°F, maintaining structural integrity in high-heat industrial environments.
• Precision Fit for 1/2" Screws: 0.5" ID and 2.25" OD ensure optimal load distribution and secure fastening in inch-system assemblies.
• Enhanced Mechanical Protection: 0.120-0.130" thickness absorbs vibration and protects surfaces from galling and corrosion.
• Regulatory Compliance: Meets RoHS 3 and REACH standards, ensuring safe use in global industrial supply chains.
• Versatile Industrial Application: Gray hard fiber material is ideal for electrical, plumbing, and machinery assemblies requiring insulation and resilience.

Professional Applications & Engineering Value

This hard fiber flat washer is engineered to address critical challenges in electrical and mechanical systems where insulation, thermal stability, and mechanical protection are paramount. The hard fiber material with a Rockwell R70 hardness provides a robust barrier against electrical conductivity, making it ideal for electrical enclosures, motor assemblies, and control panels. Its ability to withstand temperatures up to 230°F ensures reliable performance in heated environments, such as near engines or industrial ovens, without degrading. The precise 0.5" ID and 2.25" OD dimensions, tailored for 1/2" screw size, guarantee even load distribution, reducing stress on fastened components and minimizing the risk of loosening due to vibration. This washer solves common issues like corrosion, electrical leakage, and thermal expansion, offering a cost-effective solution for heavy-duty industrial applications that demand longevity and safety compliance.

Specification Summary & Compliance

This washer adheres to inch system measurements with an internal diameter of 0.5", outer diameter of 2.25", and thickness of 0.120-0.130", ensuring precise fit for 1/2" screws. It is manufactured from hard fiber with a Rockwell R70 hardness for consistent performance. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming it is free from hazardous substances and suitable for use in regulated industries.