Our muli-layer Graphite Gaskets help ensure a proper, leak-free seal for your 2 bolt flanged connections. These gaskets are suitable for high temperature service and are available in sizes(Inside diameter). Inlet Size(Pipe Side): 2.25” Features: Inner Circle Steel Reinforced; Material: Flexible graphite core/Elastomer coated Center to center: 99.57mm（please refer to the picture for Center to center size)