dsc46670.jpg

Detail of some sort of seal between the thrust chamber assembly and the turbine exhaust manifold ductwork. I believe this is the only F-1 engine I've seen with such a seal.

The markings on the seal read

3/32x3.50x360.00"
LS-63
MFR84914-02602
4 0 68

Picture 2 of 2.