Material is high density polyetheline
An item constructed of various materials in various styles and cross-sectional shapes specifically designed as a closing device for a shipping and storage container (as modified). It may have handles and/or eyes to aid in removal. See also cover (1), shipping and storage drum ammunition, nuclear ordnance and guided missile except ammunition, nuclear ordnance and guided missile.
NSN 4140-00-229-8467
NSN 5998-00-205-2951
NSN 4140-01-147-0692
NSN 6145-00-401-3518
NSN 6110-01-212-4341
NSN 5925-00-932-3027
NSN 6645-00-057-3499
NSN 6240-01-201-3291
NSN 6685-00-602-7209
NSN 7035-01-450-6795
NSN 5935-01-425-5239
NSN 5895-00-533-6428