every seal with a garter spring i install, i fill the cavity with either white grease or wheel bearing grease.
you sure don't want that spring to pop out.
another thing i do, is install the cover loosely, then install the damper 1/2 way. this centers the damper in the seal bore.
snug up the cover bolts you can get to so the cover does not move, then remove the damper [if necessary] to get to the rest of the cover bolts.
then install the damper fully.
this is an extra step, but it can be the difference between the new seal doing it's job, or not.
these days with the questionably quality of all parts in general, every [extra] step necessary to insure the part functions the way intended, is well worth the extra effort needed to do so.