Nickel Reinforced Gasket Sheets are manufactured using Grafite N.R. (Nickel Reinforced), which is an excellent semi-rigid laminated graphite material. The 2 layers of graphite foil are bonded to an ultra thin nickel reinforcement layer which is 13 microns (0.0005 in) in thickness. Nickel Reinforced Gasket Sheets that we offer are commonly used in various industrial purposes. Their bonding agent is based on a nitrite phenol adhesive. Availability Various dimensions of type NR Gaskets to suit standard raised face and flat face flanges