Patent ID: 6994355

Claim:
A seal assembly made of thermoplastic, for receiving different diameters of pipes, comprising: a frame, adapted for forming a portion of a wall of an article to which one of said pipes is to be connected; at least two circles embossed on thermoplastic sheet material contained within the frame, comprising first embossed circle C 1 having first radius R 1 , and second embossed circle C 2 having second radius R 2 , which is greater than the first radius R 1 , wherein the space between said circles comprises a deformable region; a multiplicity of weakened spots, spaced apart circumferentially around said deformable region; wherein, when the plastic sheet material within said first circle is removed, to thereby create a hole having a circumferential rim and a corresponding rim diameter at the location of the circle C 1 , said rim diameter may be increased by axial and radial deformation of said deformable region, to receive a pipe diameter which is larger than said corresponding rim diameter.