S-90133A612 4.3 mm ID x 9 mm OD FDA Compliant 21 CFR 177.2600 Rubber Sealing Washers

Key Features & Benefits at a Glance

• Food-Safe Compliance: Made from FDA-compliant neoprene rubber, ensuring safe use in food processing environments without contamination risks.
• Optimal Sealing Performance: Durometer 55A hardness provides excellent flexibility and compression recovery for reliable sealing against leaks.
• Wide Temperature Tolerance: Withstands temperatures from -30°F to 220°F, maintaining integrity in both freezing and moderate heat conditions.
• Precise Metric Fit: 4.3mm inner diameter and 9mm outer diameter designed for M4 screws, ensuring accurate alignment and secure fastening.
• Environmental & Regulatory Safety: Compliant with RoHS 3 and REACH standards, supporting sustainable and hazardous-substance-free operations.
• Durable Material Construction: Neoprene rubber offers resistance to oils, moisture, and wear, extending service life in demanding industrial settings.
• Easy Identification & Hygiene: White color allows for quick visual inspection and aligns with cleanliness standards in food-grade applications.

Professional Applications & Engineering Value

These neoprene rubber flat washers are engineered to address critical sealing and vibration-damping needs in the food industry, where equipment must adhere to strict hygiene and safety protocols. The FDA-compliant material prevents chemical leaching, while the Durometer 55A hardness ensures consistent compression under M4 fasteners, reducing loosening from thermal cycles or mechanical stress. Ideal for food processing machinery, packaging systems, and sanitary equipment, these metric washers provide a reliable barrier against fluid ingress and particulate contamination. Their temperature resistance from -30°F to 220°F allows deployment in diverse environments, from refrigeration units to heated conveyors, enhancing operational reliability and compliance with international standards like RoHS and REACH.

Specification Summary & Compliance

This flat washer features precise metric dimensions with an ID of 4.3mm and OD of 9mm, tailored for M4 screw sizes, and a thickness range of 1.168mm to 1.981mm for versatile fit. It complies with FDA 21 CFR 177.2600 for food contact, RoHS 3 (2015/863/EU) for restricted substances, and REACH (EC 1907/2006) regarding SVHC management, ensuring full regulatory adherence for industrial and food-grade applications.