Sealing device with ridges for corrugated stainless steel tubing

A method for sealing a length of corrugated tubing to a fitting, comprising the steps of:

• providing the length of corrugated tubing;
• providing a main body having a first sealing surface;
• providing a bushing received in the main body, the bushing having a second sealing surface configured to engage the first sealing surface with at least one corrugation of the tubing received between the first and second sealing surfaces;
• forming a plurality of ridges on at least one of the first and second sealing surfaces, 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
• collapsing the at least one corrugation between the first and second sealing surfaces such that the ridges contact the at least one corrugation to form a seal, wherein at least one of the bushing and the main body is sized to maintain a generally circular shape of the at least one corrugation.

A sealing device for connecting a length of corrugated tubing to a fitting, comprising:

• the fitting including a main body having a first sealing surface;
• a bushing received in the main body, the bushing having 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,
• wherein an inner diameter of the main body is configured to contact an outermost diameter of the at least one corrugation to maintain a generally circular shape of the at least one corrugation as the seal is being formed.

A sealing device for connecting a length of corrugated tubing to a fitting, comprising:

• the fitting including a main body having a first sealing surface;
• a bushing received in the main body, the bushing having 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,
• wherein an inner diameter of the bushing is configured to contact an outermost diameter of the at least one corrugation to maintain a generally circular shape of the at least one corrugation as the seal is being formed.