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The 3M COMPANY 402 is a fiberglass resin with hardener designed for bonding, laminating, and repairing fiberglass surfaces. Sold as a single quart unit, the kit includes the resin, hardener, and printed how-to directions. It is used in applications where a durable, rigid fiberglass bond is required. Licensed contractors, pool and spa technicians, and experienced maintenance professionals typically work with this product when patching or rebuilding fiberglass structures.
This product is suited for residential and light commercial repair work on fiberglass tanks, pool shells, boat hulls, and similar surfaces. The included hardener eliminates the need to source a separate catalyst, making it a practical choice for field repairs and shop work. The how-to directions support technicians who need a quick reference on mix ratios and working time.
Designed for use as a general-purpose fiberglass resin on fiberglass surfaces including tanks, pool shells, and structural fiberglass components.
Application is typically performed by pool service technicians, marine repair professionals, or licensed contractors experienced with fiberglass work. Work in a well-ventilated area and follow local safety codes for handling polyester resins and catalysts. Ensure the work surface is clean, dry, and free of grease or loose material before applying. Do not mix more material than can be applied within the working time specified in the included directions.
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