National Presto Industries : 10/22/25 – Safety Segment New Product

About this update from National Presto Industries, Inc.

NEWS RELEASE CONTACT: [email protected] FOR IMMEDIATE RELEASE (800) 945-0199 RELY INNOVATIONS, INC. ANNOUNCES NEW UL LISTED PORTABLE FLUORINE-FREE FOAM FIRE EXTINGUISHER Eau Claire, Wisconsin (October 22, 2025) - Rely Innovations, Inc., a wholly-owned subsidiary of National Presto Industries, Inc. (NYSE: NPK), announced the availability of the Rely FX™ P2.5SFFF portable foam fire extinguisher, the company's first UL Listed, fluorine-free foam extinguisher that complies with NFPA-10 standards. The 2.5-gallon, water-based foam extinguisher uses NUFOAM®, a PFAS-free agent formulated for reliable and environmentally safe use on Class A and Class B fires. The premixed solution remains stable for five years, aligning with the hydrostatic testing cycle and helping reduce service requirements. Built for demanding applications, the P2.5SFFF features a stainless-steel cylinder, nickel-plated brass valve, welded stainless steel siphon tube, and anodized aluminum nozzle assembly. It has been tested to withstand 200G impact forces and extended vibration exposure, supporting use in industrial, marine, and combat environments. For more information, visit relyfx.com. Rely Innovations, Inc., part of National Presto Industries, designs and manufactures heavy-duty fire extinguishers for industrial, marine, and defense markets. National Presto Industries, Inc., a trusted American company with over a century of expertise in military and residential products, operates in three business segments. The Housewares/Small Appliance segment designs and sells small household appliances and pressure cookers under the PRESTO® brand name. The segment is recognized as an innovator of new products. The Defense segment manufactures a variety of products, including medium caliber training and tactical ammunition, energetic ordnance items, fuzes, cartridge cases, and metal parts. The Safety segment offers smoke and carbon monoxide alarms and fire extinguishers. This release contains "forward looking statements" made pursuant to the safe harbor provision of the Private Securities Litigation Reform Act of 1995 that are subject to certain risks and uncertainties, as well as assumptions, that could cause actual results to differ materially from historical results and those presently anticipated or projected. In addition to the factors discussed above, other important risk factors are delineated in the Company's various SEC filings.

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