38x4
A nonmetallic circular item with an aperature, having a solid round cross-section. They are used primarily for sealing. For items with other than round cross section, see packing,preformed. For noncircular items with a round cross-section, see seal,nonmetallic round section and rubber,round section.
NSN 5945-00-613-5162
NSN 5965-01-424-0542
NSN 6135-00-913-2062
NSN 5990-00-230-8981
NSN 6150-01-347-1041
NSN 6240-01-338-0081
NSN 6645-00-234-7223
NSN 5996-01-599-2369
NSN 5925-01-333-7646
NSN 6620-01-219-7432
NSN 2925-01-483-6248
NSN 6320-01-227-2648