Molded seal
A closed end of a one piece flexible elastomeric seal is mounted in one end of a tubular liquid concrete tight frame that is mounted on a removable door of one wall of a concrete wall mold, the other open end of the flexible seal is in liquid concrete tight sealing contact with the other wall of the concrete wall mold.
1. A molded generally annular flexible seal for providing a liquid tight seal between the wall of a container and a pipe extending through an opening in the wall, said seal comprising:
a first generally annular wall adapted to engage a pipe in fluid tight relation, said first generally annular wall including at least two generally cylindrical portions;
a second generally annular wall adapted to contact the wall of the container in fluid tight relation, said second generally annular wall including a truncated cone portion, which is connected with one of said at least two generally cylindrical portions of said first generally annular wall by a juncture portion, wherein said truncated cone portion diverges from said juncture portion and overlies at least one of said at least two generally cylindrical portions.
2. A seal as claimed in claim 1 wherein at least two of said at least two generally cylindrical portions have different diameters.
3. A seal as claimed in claim 2 wherein said first generally annular wall includes a first end and a second end, said first end being connected to said juncture portion and said second end being closed by a removable closure wall.
4. A seal as claimed in claim 1 wherein said second generally annular wall includes a ring spaced from said juncture portion and adapted to be imbedded in concrete.
5. A molded generally annular flexible seal for providing a liquid tight seal between the wall of a container and a pipe that extends through the seal, said seal comprising;
a first generally annular wall adapted to engage a pipe in fluid tight relation, said first generally annular wall including at least two generally cylindrical portions of different diameters;
a second generally annular wall adapted to contact the wall of the container within a through hole in the wall, said second generally annular wall including a truncated cone portion, which is joined with one of said at least two generally cylindrical portions of different diameters of said first generally annular wall at a juncture portion, wherein said truncated cone portion diverges from said juncture portion and overlies at least one of said at least two generally cylindrical portions of different diameters;
said first annular wall including a closed end spaced from said juncture portion and including between said closed end and said juncture portion said at least two generally cylindrical portions of different diameters; and
said at least two generally cylindrical portions of different diameters each defining a surface to receive a clamp thereon to secure said cylindrical portion to a pipe.
6. A molded generally annular flexible seal as claimed in claim 5 , wherein said closed end of said first annular wall is removable, and is connected to said annular wall by a relieved portion.
7. A molded generally annular flexible seal as claimed in claim 6 , wherein said at least two cylindrical portions of different diameters are connected to each other by a relieved portion.
8. A molded generally annular flexible seal as claimed in claim 6 , wherein said second generally annular wall includes a ring, spaced from said juncture portion adapted to be imbedded in the wall of the container on formation of the wall of the container.
9. A molded generally annular flexible seal as claimed in claim 5 , wherein said at least two cylindrical portions of different diameters are connected to each other by a relieved portion.
10. A molded generally annular flexible seal as claimed in claim 9 , wherein said second generally annular wall includes a ring, spaced from said juncture portion adapted to be imbedded in the wall of the container on formation of the wall of the container.
11. A molded generally annular flexible seal as claimed in claim 5 , wherein said second generally annular wall includes a ring, spaced from said juncture portion adapted to be imbedded in the wall of the container on formation of the wall of the container.