I NOTICE OF INACTIVATION FOR NEW DESIGN MILS-21558A(OS) - NOTICE 1 MILITARY SPECIFICATION SEAL, OIL, PLAIN OR PLAIN ENCASED MIL-S-21558A, dated 28 September 1973, is inactive for new design and is no longer used, except for replacement purposes. Reviewers: DISC - IS Army -MI Preparing activity: (Project 533G1013) Navy - OS AMSC NIA FSC 5330 u Approved for public release; distribution is unlimited Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
