Silicone could be an answer, just not necessarily the correct answer for this question.
Possible application No. 1. It's a good idea in some cases to put a thin coating of silicone on the outer edge of a seal before driving it into its hub or housing or whatever. In some cases, the manufacturer will call for one of the Permatex liquid seals. In other cases, what looks like paint on the outer diameter of the seal is also a sealer.
Possible application No. 2. Back in the late 1960s and early 1970s, obtaining seals for certain makes of Japanese cars and trucks was difficult, even on a good day. The U. S. aftermarket sources weren't making them yet. Sometimes, the Japanese engineers had determined that certain seals were "lifetime" parts, and would never need to be replaced. Thus, the dealers were not provided with stock. Actual experience showed that determination to be bat pucky. Unfortunately, mechanics had to cope somehow. In desperation, mechanics would carefully remove the seal (or leave it in the hub), and clean it with denatured alcohol. After it was dry, they would coat the running surface of the seal with a thin coating of silicone seal , and then reinstall it over an oiled axle (or whatever). it worked on all but mangled seals.
FWIW.