S-90443A170 16.1 mm ID x 33.9 mm OD FDA Compliant 21 CFR 177.2600; 3-A Certified 18-03; NSF/ANSI 51 Sanitary Bonded Sealing Washers

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with 316 stainless steel construction, ideal for harsh food processing environments and chemical exposure.
• Reliable sealing performance from the bonded EPDM rubber (Durometer 70A), preventing fluid ingress and maintaining joint integrity.
• Broad temperature tolerance from -40°F to 300°F, ensuring consistent performance in both freezing and high-heat sanitary applications.
• Compliance with major sanitary standards including FDA 21 CFR 177.2600, 3-A 18-03, and NSF/ANSI 51 for safe use in food contact zones.
• Durable metal-bonded design providing a secure, permanent seal that resists dislodgement under vibration or pressure changes.
• Environmental regulation adherence with RoHS 3 and REACH compliance, supporting global supply chain requirements.
• Precision metric sizing (ID 16.1mm, OD 33.9mm) for exact fit with M16 fasteners, reducing installation errors and improving assembly efficiency.

Professional Applications & Engineering Value

This M16 metal bonded washer is engineered to address critical challenges in sanitary and food industry applications, where contamination prevention and equipment longevity are paramount. The 316 stainless steel base offers superior resistance to corrosive cleaning agents and acidic food products, while the black EPDM rubber seal ensures a tight, leak-proof barrier against moisture, grease, and microbial ingress. Its bonded construction eliminates the risk of seal separation during thermal cycling or mechanical stress, providing reliable performance in high-temperature pasteurization systems, cold storage assemblies, and processing machinery. By integrating FDA, 3-A, and NSF/ANSI 51 certifications, this washer simplifies compliance for engineers and procurement teams, reducing downtime and maintenance costs in regulated environments.

Specification Summary & Compliance

This washer features precise dimensions (ID: 16.1 mm, OD: 33.9 mm, Thickness: 1.5 mm) tailored for M16 screw sizes in metric system applications. It conforms to FDA 21 CFR 177.2600, 3-A 18-03, and NSF/ANSI 51 standards for food equipment safety, and is verified RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring adherence to environmental and health regulations.