NP504 (NEMA G-3) is a high performance composite manufactured from a woven glass fabric with high-temperature phenolic resin system. NP504 offers high temperature resistance, as well as good flexural, compressive, and impact strength at elevated temperatures. In addition, the phenolic resin system gives the product excellent creep resistance. This thermoset composite does not melt or become soft with heat, and therefore can be used for seals, acid-resistant gaskets, oven internals, and various structural applications. NP504 complies with the requirements of MIL-I-24768/18, Type GPG.