Expansion Joint Bolt Circle Diameter 8 1/2 in Bolt Hole Size 3/4 in Bolt Hole Threading Unthreaded Burst Pressure 900 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 10 in Flange Material EPDM Flange Material Finish Not Applicable Flange Material Grade Not Applicable Joint Material EPDM Joint Material Finish Not Applicable