An assembly comprising: a fitting body having an insertion end, said insertion end including a mount and an abutting wall that extend annularly to define an opening in said insertion end of said fitting body; a structure having an exterior surface and an end that is received in said opening; an annular cavity disposed within said insertion end of said fitting body that extends about said exterior surface of said structure, said insertion end of said fitting body including an interior surface that is positioned outwardly of said exterior surface of said structure such that said annular cavity is defined between said interior surface of said insertion end and said exterior surface of said structure, said annular cavity having a height measured radially between said interior surface of said insertion end and said exterior surface of said structure; a grip ring disposed in said annular cavity adjacent to said abutting wall, said grip ring including a ring body that extends about said structure and a plurality of first teeth that are resiliently coupled to said ring body, said plurality of first teeth extending radially inwardly to engage said exterior surface of said structure; a seal element disposed in said annular cavity that is made of a resilient material, said seal element extending radially across said height of said annular cavity such that said seal element contacts and sealingly engages said exterior surface of said structure and said interior surface of said insertion end; and a spacing element disposed in said annular cavity adjacent said seal element that is made of a resilient material, said spacing element extending radially across said height of said annular cavity such that said spacing element contacts and sealingly engages said exterior surface of said structure and said interior surface of said insertion end, characterised in that said spacing element includes four annularly extending lobes that project from said spacing element, wherein said four annularly extending lobes define four valleys with each valley being positioned between two adjacent annularly extending lobes, wherein one of said valleys of said spacing element partially receives said seal element such that said seal element and said spacing element partially nest with one another. a fitting body having an insertion end, said insertion end including a mount and an abutting wall that extend annularly to define an opening in said insertion end of said fitting body; a structure having an exterior surface and an end that is received in said opening; an annular cavity disposed within said insertion end of said fitting body that extends about said exterior surface of said structure, said insertion end of said fitting body including an interior surface that is positioned outwardly of said exterior surface of said structure such that said annular cavity is defined between said interior surface of said insertion end and said exterior surface of said structure, said annular cavity having a height measured radially between said interior surface of said insertion end and said exterior surface of said structure; a grip ring disposed in said annular cavity adjacent to said abutting wall, said grip ring including a ring body that extends about said structure and a plurality of first teeth that are resiliently coupled to said ring body, said plurality of first teeth extending radially inwardly to engage said exterior surface of said structure; a seal element disposed in said annular cavity that is made of a resilient material, said seal element extending radially across said height of said annular cavity such that said seal element contacts and sealingly engages said exterior surface of said structure and said interior surface of said insertion end; and a spacing element disposed in said annular cavity adjacent said seal element that is made of a resilient material, said spacing element extending radially across said height of said annular cavity such that said spacing element contacts and sealingly engages said exterior surface of said structure and said interior surface of said insertion end,