If you are using the 1972 T100 parts book I linked for you
in this post, neither the drawing nor the parts list showing the pushrod tubes and seals is complete or correct.
For the pushrod tubes seals and other parts, I advise you to use
the 1973 TR5T parts book, it shows/lists the same parts as the 1972 T100 parts book but also two additional parts for each pushrod tube.
In addition, I advise:-
. Use "71-1283 "O" ring, push rod cover tube" at the bottom of the pushrod tubes, in place of the listed 70-7310. The two O rings are the same size, 71-1283 is made of better material than 70-7310.
. As well as the listed 70-3547 seals, order two of 70-4752; these are the same inside and outside diameters but, where 70-3547 is approximately 1/10-inch thick, 70-4752 is approximately 1/8-inch thick. It is important that, whichever seal thickness is used, it is compressed by only 0.020-inch to 0.030-inch when the cylinder head bolts are torqued; having the two thicknesses of seal will allow you use whichever is most suitable.
