In 2011, leaders in the sealing industry performed testing on spiral wound gaskets to see how the winding density affected the sealing behavior. Prior to the work completed by David Reeves with Chevron and Jose Veiga with Teadit, the existing ASME B16.20 standard did not include sealability performance. In fact, a compression test was the only ‘performance testing’ required in that 2007 standard. Updates to the B16.20 standard to include sealability performance came as a result of these tests.