A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6320-01-111-0960
NSN 7035-00-445-9657
NSN 5925-01-415-9961
NSN 6130-01-412-3824
NSN 5945-00-643-6503
NSN 6645-00-658-7838
NSN 5935-01-179-8641
NSN 5920-01-310-6027
NSN 5960-01-068-0924
NSN 5990-00-522-3425
NSN 5925-01-014-4779
NSN 5835-01-363-4527