S-99082A230 0.312" ID x 0.688" OD FDA Compliant 21 CFR 177.2600 Rubber Sealing Washers

Key Features & Benefits at a Glance

• FDA 21 CFR 177.2600 compliance ensures safe, non-contaminating use in food processing and packaging environments.
• Excellent chemical resistance from Buna-N rubber protects against degradation from oils, greases, and many cleaning agents.
• Wide operating temperature range (-20°F to 175°F) provides reliable sealing performance in both cold storage and heated processes.
• Durometer 60A hardness offers an optimal balance of flexibility for effective sealing and durability under compression.
• Precise 0.312" ID and 0.688" OD dimensions ensure proper fit and alignment on 5/16" fasteners for consistent gasketing.
• RoHS 3 and REACH compliance guarantees environmental safety and adherence to strict international substance regulations.
• White color and food-grade material maintain cleanliness standards and allow for easy visual inspection in sanitary applications.

Professional Applications & Engineering Value

These Buna-N rubber flat washers are engineered specifically for the demanding conditions of the food industry. The FDA compliant material prevents chemical leaching, ensuring product purity in applications like food processing machinery, bottling lines, and commercial kitchen equipment. Their excellent temperature stability from -20°F to 175°F allows them to maintain seal integrity through thermal cycling, preventing leaks in both refrigeration and hot water systems. The 0.312" ID provides a secure fit on 5/16" screws, while the 0.688" OD creates an effective sealing surface. With Durometer 60A hardness, they compress adequately to fill surface imperfections without permanent deformation, solving common gasket failure points in sanitary equipment maintenance.

Specification Summary & Compliance

This flat washer meets dimensional specifications with 0.312" inner diameter, 0.688" outer diameter, and thickness ranging from 0.046" to 0.078" in the inch system. The Buna-N rubber construction provides consistent performance with Durometer 60A hardness. Compliance includes FDA 21 CFR 177.2600 for food contact applications, RoHS 3 (2015/863/EU) for hazardous substance restrictions, and REACH (EC 1907/2006) for chemical safety, making it suitable for global food industry supply chains.