Method and apparatus having three surfaces for sealing distribution ducts

A method of sealing a take-off duct to a collar nipple, collar flange, and heating air-conditioning box/run, the collar nipple installed in a surface of the heating/air-conditioning box/run, the method comprising, providing a U-shaped tape, the U-shaped tape comprising:

• a planar wall having a first side, an opposing second side, a first edge, and a distal second edge, the planar wall being formed of a continuous sheet of material conforming to a planar surface and the first side of the planar wall having an adhesive layer;
• and
• a first curved wall having an edge, wherein the edge and first curved wall have the shape of a segment of a first cylinder, the first curved wall formed of a continuous sheet of material and having an adhesive layer;
• and
• a second curved wall having an edge, wherein the edge and second curved wall have the shape of a segment of a second cylinder, the second curved wall formed of a continuous sheet of material and an adhesive layer, wherein a diameter of the second cylinder is greater than the first cylinder, and the first and second cylinder share the same center point;
• wherein the first curved wall and the second curved wall extend outwardly from the planar wall in a direction away from and opposing the first side of the planar wall;
• wherein the first edge of the planar wall and the edge of the first curved wall are coincident and meet in an arc;
• the distal second edge of the planar wall and the edge of the second curved wall are coincident and meet in an arc;
• wherein the adhesive layer of the first curved wall is on a side of the first curved wall that faces away from the second curved wall and the adhesive layer of the second curved wall is on a side of the second curved wall that faces towards the first curved wall;
• pulling a vapor barrier and insulation layer back from an end of a duct core of the take-off duct;
• fitting the end of the duct core over the collar nipple;
• wrapping a band over the end of the duct core;
• tightening the band;
• affixing the adhesive layer of the first curved wall to the circumference of the collar nipple covering at least part of the exposed portion of the collar nipple and part of an end of the duct core;
• affixing the adhesive layer of the planar wall to the box/run around the collar;
• pushing the insulating layer and the vapor barrier into the tape between the first curved wall and the second curved wall, the insulating layer and the vapor barrier abutting the planar wall;
• and
• affixing the adhesive layer of the second curved wall to the vapor barrier of the take-off duct.

A U-shaped tape for sealing a take-off duct having a vapor barrier to a collar nipple, collar flange, and heating air-conditioning box/run, the collar nipple installed in a surface of the heating/air-conditioning box/run, the tape comprising;

• a planar wall having a first edge, a distal second edge, a box/run interface side, and an opposing side, the planar wall being formed of a continuous sheet of material, conforming to a planar surface, and the box/run side of the planar wall having an adhesive layer;
• and
• a first curved wall having a first edge and a second edge, and a collar nipple side, wherein the first edge of the first curved wall and the first curved wall have the cylindrical shape of the collar nipple, the first curved wall formed of a continuous sheet of material, the collar nipple having a first diameter, and the collar nipple side having an adhesive layer;
• and
• a second curved wall having a first edge and a second edge, and a side for abutting against an outer surface of a take-off duct vapor barrier, wherein the first edge of the second curved wall and the second curved wall have the cylindrical shape of the outer surface of the take-off duct vapor barrier, the first curved wall formed of a continuous sheet of material, barrier, and the second curved wall having a diameter similar to a diameter to the the outer surface of the take-off duct vapor barrier having a diameter, the diameter outer surface of the take-off duct vapor barrier being greater than the diameter of the collar nipple, wherein both diameters share the same center point, and the side for abutting against an outer surface of a take-off duct vapor barrier has an adhesive layer;
• wherein the first edge of the planar wall and the first edge of the first curved wall are coincident and meet in an arc;
• the second edge of the planar wall and the first edge of the second curved wall are coincident and meet in an arc;
• and
• the second edge of first curved wall and the second edge of second curved wall extend outwardly from the planar wall in a same direction away from and opposing the box/run side of the planar wall;
• wherein the adhesive layer on the collar nipple side of the first curved wall faces away from the second curved wall and the adhesive layer on the side for abutting against an outer surface of a take-off duct vapor barrier of the second curved wall faces towards the first curved wall.