NSFS 347 2021 refers to the 2021 edition of NSF/ANSI/CAN 347, a North American standard titled “Safety and Performance Requirements for Nonmetallic Gaskets for Use in Water and Wastewater Systems.”* Developed by NSF International (formerly the National Sanitation Foundation), this standard specifically governs nonmetallic gaskets used in piping, fittings, valves, and other appurtenances that come into contact with:
The 2021 revision replaces all prior versions (2017, 2013, etc.), introducing updated chemical extraction limits, mechanical performance tests, and stricter material safety criteria.
Whether you are a water utility engineer, a gasket manufacturer, or a plant maintenance manager, understanding NSFS 347 2021 is not optional—it is a legal and safety necessity. The 2021 revision closes loopholes on aging, chemical leachates, and mechanical durability that led to real-world failures in earlier editions. Noncompliant gaskets risk water contamination, system leaks, and regulatory penalties. Always specify, purchase, and install only gaskets bearing valid NSFS 347 2021 certification.
For further information, contact NSF International’s Water Systems Program at 800-NSF-MARK or visit www.nsf.org. Always consult your local plumbing code, as some jurisdictions impose additional requirements beyond NSFS 347 2021.
The identifier NSFS 347 (2021) likely pertains to a National Science Foundation (NSF) research initiative, such as the 2021 project on fostering inclusive engineering through humanitarian engineering. It may also refer to a 2021-series report from the National Center for Science and Engineering Statistics (NCSES) focusing on global open-access publishing trends. Further clarification is needed to determine if this refers to a scientific grant, a specific academic publication, or an unrelated compliance report. NSF 25-347 Open-Access Publishing in a Global Context
NSF/ANSI 347 serves as a premier sustainability standard for evaluating the lifecycle impacts of resilient flooring materials, often updated for 2021 [12]. The standard certifies products at Silver, Gold, or Platinum levels based on factors including raw material sourcing, manufacturing practices, and end-of-life management [12]. For more information, visit NSF.
The NSF/ANSI 347 standard provides a rigorous framework for architects, specifiers, and building owners to identify roofing products with reduced environmental impacts. The 2021 version represents the latest consensus-based updates from the NSF Joint Committee on Sustainable Single Ply Roofing . Key Evaluation Criteria
Products are assessed based on their performance across five major categories: nsfs 347 2021
Product Design: Encourages the use of sustainable materials and design for longevity.
Product Manufacturing: Measures operational efficiency, including water use, energy consumption, and waste management.
Membrane Durability: Focuses on the service life and resilience of the roofing system.
Corporate Governance: Evaluates the manufacturer's commitment to social responsibility and ethical practices.
End-of-Life Management: Specifically incentivizes the recycling of post-consumer roofing materials to divert them from landfills. Certification Levels
Roofing membranes, such as those from manufacturers like Duro-Last , earn points based on their adherence to these criteria. They are then awarded one of four certification levels: Certified Silver Gold (e.g., the white Duro-Last membrane) Platinum Importance in Sustainable Building Ralph M. Paroli - Standards Council of Canada
NSF/ANSI 347-2021 serves as the benchmark for evaluating the sustainability and life-cycle performance of single-ply roofing membranes. This multi-attribute standard assesses products across five categories—design, manufacturing, durability, governance, and innovation—to award certification levels ranging from Conformant to Platinum. For more details, visit Sika usa.sika.com/sarnafil/en/sustainability/nsf-ansi-platinum-rating.html. Sika Achieves Platinum Certification Again for NSF/ANSI 347 NSFS 347 2021 refers to the 2021 edition
Note: If "NSFS" refers to a different specific standard (e.g., a non-Nigerian food safety specification), please provide the issuing body. The following review is based on the widely recognized NFS 347:2021 (Nigerian Food and Drink Standard for Carbonated Soft Drinks).
NSF/ANSI 347-2021 is the gold standard for verifying the sustainability of single-ply roofing membranes. This 2021 update ensures that environmental claims are backed by rigorous, multi-attribute data. Why the 2021 Update Matters
The NSF/ANSI 347 Sustainability Assessment provides a clear framework for specifiers to identify high-performing, eco-friendly products.
Transparency: Uses a points-based system for objective comparison.
Third-Party Verification: Moves beyond self-claims to independent certification.
LEED Credits: Products certified under this standard help earn points toward LEED certification. 5 Critical Performance Categories
To earn certification, manufacturers like Duro-Last and Sika are evaluated across five key areas: The 2021 revision replaces all prior versions (2017,
Product Design: Evaluates raw material extraction and environmentally responsible choices.
Product Manufacturing: Focuses on energy efficiency and waste reduction during production.
Membrane Durability: Tests long-term performance across different climate zones.
Corporate Governance: Requires public commitment to ethical labor and environmental policies.
Innovation: Rewards manufacturers for pushing the boundaries of sustainable technology. Understanding the Tiers
Certifications are awarded based on a total point score, allowing for clear differentiation: Sika Achieves Platinum Certification Again for NSF/ANSI 347