Pipe-sealing collar
The invention comprises a replacement collar for a roof vent pipe. The collar provides UV protection for an existing gasket or can be used as a separate installation. Preferably, the collar has a thicker gauge and includes a seal flange and pre-applied sealant. The collar is designed for universal application for all appropriate sizes of pipe with unique cut line indentations to enable correct trimming to selected size.
1. A roof pipe collar comprising:
a frusto-conical, hollow body having an inner surface and an outer surface;
said frusto-conical, hollow body having a central axis extending through said body that is vertical;
a circular opening at a top end of said body having a first diameter and defined by a vertical, circumferential wall extending from said inner surface to said outer surface;
an open bottom having a second diameter larger than said first diameter;
a plurality of upper vertical cut-line indentations extending vertically downward into said outer surface and circumscribing said outer surface, said plurality of upper vertical cut-line indentations having progressively increasing diameters from said circular opening at said top end of said body to said open bottom;
a plurality of lower vertical cut-line indentations extending vertically upward into said inner surface and circumscribing said inner surface, each said lower vertical cut-line indentation being vertically aligned with but not intersecting an upper vertical cut-line indentation and defining an aligned pair of upper and lower vertical cut-line indentations, and configured such that a vertical cut through said collar from said upper vertical cut-line indentation to said lower vertical cut-line indentation in a single aligned pair will produce a circular opening in said collar having a third diameter that is larger than said first diameter and smaller than said second diameter, and defining a second vertical, circumferential wall extending from said inner surface to said outer surface.
2. The pipe collar of claim 1 , further comprising a semi-circular ridge positioned on said inner surface adjacent to and radially inward from each said lower cut-line indentation.
3. The pipe collar of claim 1 , wherein said body is symmetrical about said central vertical axis extending through said body from said top end to said open bottom.
4. The pipe collar of claim 1 , wherein said body is manufactured of a resilient elastomeric material that is resistant to damage from ultraviolet radiation.
5. The pipe collar of claim 1 , further comprising a plurality of reinforcement rings on said outer surface, each said reinforcement ring being positioned adjacent to and radially outward from each said upper vertical cut-line indentation.
6. The pipe collar of claim 5 , further comprising a semi-circular ridge positioned on said inner surface adjacent to and radially inward from each said lower cut-line indentation.
7. The pipe collar of claim 1 , further comprising a flange extending downward from said inner surface of said body, said flange positioned radially inward from said open bottom and radially outward from an aligned pair of upper and lower vertical cut-line indentations that is closest to said open bottom.
8. The pipe collar of claim 7 , wherein said flange is approximately ½ inch in length.
9. The pipe collar of claim 7 , further comprising a sealant circumscribing said inner surface of said body and positioned radially outward from said flange.
10. The pipe collar of claim 9 , wherein said sealant is covered by a removable non-stick cover.