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What Materials Are Safe for Potable Water Systems?

Anyone who works in food and beverage processing understands the specific health standards that must be upheld for any materials used in production—especially materials that come in contact with drinking water.

North Coast Seal understands these regulations and why strict compliance is critical for the safety of manufacturers and their customers. We provide sealing solutions for the water industry and any other application that must meet potability requirements.

Our inventory includes dual-certified materials for both NSF 51 and NSF 61, including NCS 7A-70, a compound designed to resist chloramine in drinking water.

NSF 61 Seals for Drinking Water System Components

All products sold or distributed for water treatment in the United States must comply with NSF/ANSI Standard 61: Drinking Water System Components—Health Effects. This standard sets health criteria for pipes, fittings, and sealing materials.

Our NSF 61-certified compounds help ensure that your products meet U.S. and Canadian requirements—offering both compliance and peace of mind.

Chloramine-Resistant Seals With NCS 7A-70

Chloramines are disinfectants used to keep drinking water safe as it moves through municipal systems. Our proprietary compound, NCS 7A-70, was developed specifically for the U.S. drinking water industry. It’s NSF 61 certified and tested for chloramine resistance, making it ideal for molded components like O-rings, seals, and gaskets.

Frequently Asked Questions About Drinking Water Seals

What types of seals are safe for use in potable water systems?

Seals that are certified under NSF/ANSI 61 are considered safe for use in potable water systems. These include rubber compounds designed to resist chemicals, biofilm, and disinfectants like chloramine.

What is NSF/ANSI 61, and why does it matter?

NSF/ANSI 61 is a certification standard that ensures materials used in water system components—such as gaskets, valves, and fittings—do not leach harmful substances into drinking water. Compliance is required for most municipal and commercial water systems in North America.

What makes NCS 7A-70 a good choice for drinking water seals?

NCS 7A-70 is specially formulated to resist chloramines, a common disinfectant in U.S. water systems. It’s NSF 61 certified and can be molded into O-rings, gaskets, or other custom shapes.

Can you help us choose the right sealing material for our water treatment application?

Absolutely. Our team can recommend the best material based on your application’s temperature, pressure, chemical exposure, and regulatory requirements.

Get Peace of Mind for Your Business and Your Consumers

CHOOSE OUR SEALING SOLUTIONS FOR DRINKING WATER

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