Phenolic Paper laminatePaper/phenolic resin laminated plastic(SRBP - Synthetic Resin Bonded Paper)First class electrical insulationKite Brand TUFNOL is a first class electrical insulating materials with good dielectric strength and high insulation resistance. It has low moisture absorption and good mechanical strength, although its impact strength is lower than that of most other grades of Tufnol. Kite Brand sheet meets British Standard BS EN 60893-3-4 Type PF CP 206. It is readily machined and can be hot punched in thicknesses up to 3.2mm.