S-90467A220 19.6 mm ID x 33.3 mm OD High-Pressure Bonded Sealing Washers For Screw Heads

Key Features & Benefits at a Glance

• Superior sealing performance with bonded fluorocarbon rubber that prevents fluid and gas leaks under extreme pressures up to 3000 psi for fluids and 200 psi for gases.
• Excellent temperature resistance maintains integrity across a wide range from 0°F to 390°F, ideal for fluctuating industrial environments.
• Durable 304 stainless steel construction offers high corrosion resistance and a Rockwell B90 hardness for long-lasting mechanical strength.
• Reliable fluorocarbon rubber seal with Durometer 75A hardness ensures consistent compression and sealing without degradation over time.
• Precise metric sizing (19.6mm ID, 33.3mm OD) ensures a perfect fit for M20 screws, reducing installation errors and improving assembly efficiency.
• Metal-bonded design combines the strength of stainless steel with the flexibility of rubber, providing a robust, one-piece solution that won't separate under stress.
• Versatile black seal color aids in visual inspection and blends well with various industrial components for a professional finish.

Professional Applications & Engineering Value

This M20 metal bonded washer is engineered to address critical sealing challenges in demanding industrial settings. The combination of 304 stainless steel and fluorocarbon rubber delivers exceptional resistance to chemicals, oils, and temperature extremes, making it ideal for applications in automotive, hydraulic systems, and machinery where leak prevention is paramount. Its metric dimensions and precise M20 screw compatibility ensure easy integration, while the bonded design eliminates the risk of seal displacement under high vibration or pressure cycles. By providing a reliable barrier against fluids and gases, this washer reduces maintenance downtime and enhances the longevity of assembled components, offering significant engineering value in sectors like manufacturing, aerospace, and fluid handling systems.

Specification Summary & Compliance

This washer features precise metric dimensions with an ID of 19.6 mm, OD of 33.3 mm, and thickness of 1.5-1.8 mm, designed for M20 screw size applications. It complies with standard metric measurement systems and is manufactured from 304 stainless steel with a Rockwell B90 hardness and fluorocarbon rubber seal rated at Durometer 75A. The product is suitable for use in temperatures from 0°F to 390°F and pressures up to 3000 psi for fluids and 200 psi for gases, ensuring reliability in various industrial environments. It meets general industry standards for material quality and performance, with adherence to common specifications for corrosion resistance and sealing efficiency, though specific compliance such as RoHS or REACH should be verified per batch if required.