This report presents detailed results of tests carried out on 5 styles of gaskets whose properties cover the broad range of gaskets available commercially.Three types of tests have been performed, namely: (a) mechanical (stress-deflection, and creep); (b) Leakage tests on a hydraulic test rig; and (c) Leakage tests on a bolted-up rig. Tests (a) and (b) were conducted in the laboratory affiliated with the first two authors while tests (c) were performed in the laboratory affiliated with the third author.The test procedure was defined on the basis of extensive gasket tests carried out under the auspices of the Pressure Vessel Research Committee and under the direction of its Sub-committee on Bolted Flanged Connections through its Task Group on Gasket Testing.