S-93785A819 0.812" ID x 2" OD ASME B18.21.1 Plastic Washers

Key Features & Benefits at a Glance

• Exceptional high-temperature performance withstands continuous exposure up to 500°F, ensuring reliable operation in demanding thermal environments.
• Superior chemical resistance thanks to PEEK plastic construction, preventing degradation from harsh industrial chemicals and solvents.
• Excellent mechanical durability with a Rockwell M103 hardness rating, providing long-lasting wear resistance and load distribution.
• Precision dimensional fit with a 3/4" inner diameter designed for standard screw sizes, ensuring easy installation and secure fastening.
• Compliance with industry standards including ASME B18.21.1, guaranteeing consistent quality, performance, and interchangeability.
• Broad operational temperature range from -20°F to 500°F, offering versatility for applications in extreme cold and heat.
• Environmental and safety compliance with RoHS 3 and REACH regulations, making it suitable for use in regulated and eco-conscious industries.

Professional Applications & Engineering Value

This PEEK plastic flat washer is engineered to solve critical challenges in high-stress industrial environments where metal washers fail due to corrosion, galvanic reactions, or thermal limitations. Its black PEEK material provides inherent resistance to a wide range of chemicals, making it ideal for chemical processing, oil and gas, and aerospace applications. The 2" outer diameter and specific thickness range (0.108-0.160") ensure optimal surface coverage and pressure distribution, reducing the risk of loosening under vibration. For engineers specifying inch-system washers that must perform in high-temperature settings up to 500°F, this component offers a reliable, non-conductive, and lightweight alternative that maintains integrity where others deteriorate.

Specification Summary & Compliance

This flat washer conforms to ASME B18.21.1 specifications for dimensional accuracy and performance. It is manufactured from PEEK plastic in black, with an inner diameter of 0.812" (for #3/4 screw size), outer diameter of 2", and thickness between 0.108" and 0.160". The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and health safety standards for industrial use.