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Polyester Resins are the most widely used resins in the composites industry. Polyester Resins are less expensive, offer some corrosion resistance, and are more forgiving than epoxies. The majority of all fiberglass parts are constructed using Polyester Resins because they are easy to use, fast curing, and tolerant of temperature and catalyst extremes.

#77 Polyester Molding Resin is a wax-free, general purpose resin. This resin is a great choice for building low-cost molds, or for general part fabrication. #90 Isophthalic Polyester Resin is a durable, dimensionally stable, corrosion resistant resin. The 225°F service temperature and low shrinkage properties of this resin are ideal for making dimensionally stable molds or extremely durable parts.

Want to learn more about Polyester Resins? Fibre Glast has a free Learning Center with helpful white papers like: About Resins, Mold Construction, Molding Fiberglass, and Fundamentals of Fiberglass. You can also contrast Polyester Resin with Epoxy Resin and Vinyl Ester Resin in the Fibre Glast Blog article: Choosing the Right Resin.

Click on a Polyester Resin image below to get more information and view pricing. You can place your order right her on our website or, if you have any questions, call 1.800.838.8984 | 8:00am - 8:00pm EST Mon-Fri.

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