Coming Soon, June 2024

Product Description

PURE: NSF 61 Listed Rubber

Coming soon is PURE, rubber products certified under NSF 61, ensuring clean gasketing & sealing solutions for the water treatment sector. Rely on PURE to ensure compliance in this dynamic regulatory environment, as nearly all US states & municipalities mandate NSF 61 certification for components in drinking water distribution systems.

PURE is formulated to provide your exact requirements in Sheet, Molded, & Extruded rubber products and is engineered and certified to prevent hazardous chemical leaching in water temperatures up to 82 °C / 180 °F (Commercial Hot). The most stringent NSF 61 test standard.

Inquire today about how PURE can excel in your potable water applications. Made in the USA. Samples available upon request.

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PURE Specifications & Requirements Met

  • NSF/ANSI/CAN 61 Listed, Approved & Certified

  • Commercial Hot Water Certified (up to 180°F)

  • Certified Sheet, Molded, and Extruded Rubber

  • NSF/ANSI/CAN 372 – Lead Free

  • AWWA C-111/A21.11 (table 4)

  • FDA Approved Ingredients per 21 CFR 177.2600
  • ASTM D2000 M5AA810 A13 B13 C12 EA14 F17 Z1 (Z1=75 durometer)
  • A vast majority of US States and Canadian territories require drinking water system parts to be compliant with or certified to NSF/CAN/ANSI 61.

The above map and related regulatory content were provided by “Drinking Water System Components – NSF/ANSI/CAN 61” by NSF. Learn more at this link.

Our rubber products are a proprietary blend of various polymers formulated to meet stated physicals and specifications. The named product polymer is not necessarily the primary polymer representing the highest percentage of the polymer blend. Determination of the suitability of the goods for the uses and applications contemplated by Buyer and others shall be the sole responsibility of the Buyer or user. No guaranty is given with respect to length of service on any particular application. Suggestions or recommendations made by Seller in its product literature concerning uses or applications of the goods are believed to be reliable, but Seller makes no warranty or guaranty of results to be obtained since the conditions of the use and application by Buyer and others are beyond Seller’s control.

View complete Terms & Conditions of Sale for suitability of use and formulations

Material Physicals

Specifications Met
75EPDM1450 psi150%NSF/ANSI/CAN 61

PURE NSF 61: Sheet, Extruded, and Molded Rubber

Slightly Unrolled Black Rubber Sheet Roll

PURE Sheet Rubber

  • Lengths: 12.5′ to 360′
  • Widths: Up to 55″
  • Thicknesses: 1/64 – 4″

PURE Rubber Extrusions

  • Tubes, Cords, Seals & More
  • Custom profiles up to 12″ diameter
  • Endless lengths
Multiple Types of Molded Gasket in Black, Orange, Blue and White

PURE Molded Rubber Parts

  • Filters, Barriers, Gaskets & More
  • Custom Molded Parts up to 48″
  • Tool Design Assistance

9 Common Q&As about NSF 61 Rubber

The NSF 61 certification was developed to ensure the safety of drinking or potable water. This certification has become increasingly critical as the majority of American states have provided their own state requirements for materials that interact with potable water.

Therefore, this short list of questions and answers can provide you with a working understanding of the specification and how it relates to your rubber products. For any areas that you’d like more clarification on or any application specific questions, you can speak to our experienced team at or 714-532-3355.

1. What is the NSF 61 specification?

NSF 61 is a standard established by the National Sanitation Foundation that certifies whether materials are safe to interact with potable or drinking water. While the scope of the certification is broad, the general objective is to ensure that potentially dangerous chemicals do not leach into the water.

2. When is NSF 61 required or recommended?

While each application, region and state will have their own requirements; generally, any drinking water or potable water application may require NSF 61 required materials. According to NSF, a majority of US states require materials to have an ANSI-Accredited Certification.

3. What rubber products or applications does it apply to?

Any products that come into contact with potable water. This can include

  • Protective barrier materials
  • Joining and sealing materials (gaskets)
  • Mechanical devices including treatment products (water meters, valves, filters)
  • Pipes and related products (pipe, hose, fittings)
  • Plumbing devices (faucets, drinking fountains)
  • Non-metallic potable water materials

4. What is NSF 372?

Often noted within NSF 61, NSF 372 is a test methodology designed to detect and prevent dangerous levels of lead leaching. The certification is related to lead-free plumbing applications in specific US States and SDWA (Safe Drinking Water Act).

5. What is AWWA C111/A21.11?

AWWA (American Water Works Association) is a non profit international group that advises on water management. Also referenced regularly with NSF 61, this standard provides the minimum requirements for specific water related applications such as rubber gasket joints for ductile-iron pressure pipe & ductile-iron and gray-iron fittings.

6. What is the difference between NSF 61 Approvable vs NSF 61 Listed?

An NSF 61 listed rubber product complies with NSF 61 testing requirements and is listed under a nationally recognized, accredited listing agency.

While an approvable product may perform similarly to a listed product, many end users and regulatory bodies are now requiring the use of listed materials. In those cases, using listed materials in your finished components can be extremely beneficial in expediting the certification process.

7. How to know if your rubber manufacturer and their products are certified?

In order to be listed, a rubber manufacturer must provide their compound to a Nationally Recognized Testing Laboratory (NRTL) that has been certified to evaluate compliance with NSF 61. After comprehensive testing, a listing is established on the nationally recognized, accredited agency.

8. Are all NSF 61 materials certified to the same level?

No, NSF 61 products can be certified to be acceptable within 3 levels of water temperature

  • Lowest: Cold Water “CLD 23”, 23 +/- 2 °C
  • Middle: Domestic Hot “D. Hot”, 60 +/- 2°C (140 +/- 4 °F)
  • Highest: Commercial Hot “C. Hot”, 82 +/- 2 °C (180 +/- 4 °F)

9. Anything else that I need to know about NSF 61?

NSF 61 listed products must be regularly renewed, ensuring that your rubber manufacturer maintains their compliance by checking their listings periodically. In addition to the specifications listed above, NSF 61 can also be labeled as NSF/ANSI/CAN 61. These are equivalent specifications.

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