securing the fitting 22 inside the pipe 12 shown in fig6 and 7 the pipe 12 is well known and generally comprised of but not limited to plastic such as pvc or pex cross linked polyethylene the pipe includes an outer surface 19 and an end 23 that will receive the cap 10 depending on the desired application the pipe may be a rigid or flexible and may have a variety of standard sizes the fitting 22 is also well known and is available in standard sizes they are generally comprised of a metal such as brass or plastic and include at least one insert 21 having a diameter slightly smaller than the inner diameter of the pipe 12 such that it can be inserted into the end 23 of the pipe 12 the t shaped fitting 22 shown is intended to be exemplary of just one type of such pipe fittings as shown in fig4 the cap 10 is generally a metal band having a circumference of any desired size so that it fits over a desired pipe or tube the metal band 10 includes a first end 24 a second end 26 and a side wall 28 extending between the first end 24 and second end 26 the side wall 28 has a generally uniform thickness between the first end 24 and the second end 26 the width of the side wall between the first and.