S-90443A250 16.1 mm ID x 33.9 mm OD FDA Compliant 21 CFR 177.2600 Sanitary Bonded Sealing Washers

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 316 stainless steel construction, ideal for harsh washdowns and chemical exposure in food processing environments
• Reliable sealing performance provided by the bonded blue Fluoroprene Fluoroelastomer seal, preventing fluid and contaminant ingress in M16 fastener applications
• Broad operational temperature tolerance from 5°F to 390°F, ensuring seal integrity and metal stability in both freezing and high-heat sanitary processes
• Compliance with stringent industry regulations including FDA 21 CFR 177.2600, RoHS 3, and REACH, guaranteeing safety for direct and indirect food contact
• Optimized dimensional design with a precise 16.1 mm ID and 33.9 mm OD for a perfect fit on M16 screws, enhancing assembly accuracy and load distribution
• Durable seal material with a Durometer 75A hardness, offering an optimal balance of flexibility for sealing and resistance to compression set
• Enhanced equipment longevity by combining a robust metal washer with a high-performance rubber seal, reducing maintenance frequency and downtime

Professional Applications & Engineering Value

This M16 metal bonded washer is engineered to solve critical challenges in sanitary and food industry applications. The core 316 stainless steel body provides superior resistance to corrosive cleaning agents and oxidation, while the permanently bonded Fluoroprene Fluoroelastomer rubber seal (color-coded blue for easy identification) ensures a leak-proof barrier against moisture, grease, and microbial ingress. Its ability to perform across a wide temperature range from 5°F to 390°F makes it suitable for everything from refrigeration units to hot liquid processing lines. By integrating the metal and seal into a single, robust unit, it eliminates the risk of seal misplacement during assembly or vibration, providing a reliable, long-term sealing solution for food processing equipment, mixers, conveyors, and other machinery where hygiene and durability are paramount.

Specification Summary & Compliance

This washer conforms to precise metric dimensions with an Inner Diameter (ID) of 16.1 mm, Outer Diameter (OD) of 33.9 mm, and a Thickness of 1.5 mm, designed for M16 screw size. The seal material is specified as Fluoroprene Fluoroelastomer Rubber with a Durometer 75A hardness. The product is verified to meet FDA Compliant 21 CFR 177.2600 for food contact, RoHS 3 (2015/863/EU) Compliant, and REACH (EC 1907/2006) Compliant standards, ensuring it is free of hazardous substances and suitable for use in regulated sanitary environments.