NP572 (NEMA G-11) is a high strength medium weight glass epoxy composite that offers excellent physical, mechanical, and electrical properties at both room temperature and elevated temperatures.
NP625 (NEMA XPC) is a paper based phenolic grade, which is suitable for punching and shearing in thicknesses up to 0.125 inch and at temperatures slightly higher than room temperature.
NP691 (NEMA FR-1) is a flame-resistant, room temperature punching grade is similar to NP612 in electrical properties and mechanical strength, but offers improved moisture resistance.