Expansion Joint Bolt Circle Diameter 11 3/4 in Bolt Hole Size 3/4 in Bolt Hole Threading Unthreaded Burst Pressure 840 psi Compression Distance 1 1/2 in Connection Type Flanged Expansion Distance 5/8 in Expansion Joint Type Single Bulb Features Flanges Molded into Body Retaining Rings Flange Diameter 13 1/2 in Flange Material EPDM Flange Material Finish Not Applicable Flange Material Grade Not Applicable Joint Material EPDM Joint Material Finish Not Applicable