Selecting O-rings is an Fn Challenge.I don't see why is must be silicone, EP and Viton were not popular back then. But silicone o-rings are not hard to come by. Again, I don't have a Pilot, but if the applications requires a harder or softer seal you'll have to take that into consideration.
Yes, a -132 is also a -010 (currently an EP 70)
Would this be the right selection for the annotated item 35, 002?