FRCP
Requirement of mere good cause for sealing motions and their attachments does not turn on whether they are dispositive, but rather whether they are only tangentially related to the merits.
Concurrence: In the case at bar, the motion was dispositive as to the preliminary injunction.
Dissent: Requiring compelling interest for disclosure unless dispositive is a clearer rule, and compelled by precedent.
http://cdn.ca9.uscourts.gov/datastore/opinions/2016/01/11/15-55084.pdf
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Neither an authoritative statement of the law nor legal advice. Quick work.