Patent ID: 7621567
Filing Date: 2009-11-24
Classification: F16L,Y10S

Abstract:
1. A sealing device for connecting a length of tubing to a fitting, comprising: the fitting having an adapter formed with a first sealing surface; a bushing received in the adapter, the bushing being formed with a second sealing surface for engaging the first sealing surface with at least one corrugation of the tubing received between the first and second sealing surfaces; and a plurality of ridges formed on at least one of the first and second sealing surfaces, such that the ridges contact the at least one corrugation to form a seal, the plurality of ridges including an end ridge and at least first and second internal ridges arranged in order radially outward, said at least first and second internal ridges being spaced apart from the end ridge, wherein a distance between the end ridge and the first internal ridge is greater than a distance between the first internal ridge and a second internal ridge to provide concentrated sealing pressure and prevent unfolding of the at least one corrugation.