Expansion Joint Bolt Circle Diameter 11 3/4 in Bolt Hole Size 3/4 in Bolt Hole Threading Unthreaded Burst Pressure 800 psi Compression Distance 1 19/32 in Connection Type Flanged Expansion Distance 51/64 in Expansion Joint Type Single Bulb Features Flanges Molded into Body Retaining Rings Flange Diameter 13 1/2 in Flange Material Neoprene Flange Material Finish Not Applicable Flange Material Grade Not Applicable For Fluid Type Fluids with 20 Percent or Less Solids