O-ring is fiberglass and moly-filled ptfe.
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 5855-00-586-6255
NSN 6105-01-109-3936
NSN 6130-01-012-6676
NSN 6130-01-190-0692
NSN 5920-00-823-6088
NSN 5950-01-648-0061
NSN 5975-01-224-7209
NSN 5950-01-643-9278
NSN 5950-01-290-5208
NSN 4140-01-077-3981
NSN 5975-00-936-7377
NSN 5930-01-103-9786