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 2925-00-041-0439
NSN 6130-01-422-4258
NSN 6645-00-168-0781
NSN 6650-01-180-9160
NSN 6645-01-461-7704
NSN 5835-01-482-1591
NSN 6645-01-093-1426
NSN 6105-01-357-6141
NSN 4140-00-232-1039
NSN 6320-01-310-8068
NSN 5945-00-714-9267
NSN 5855-01-180-5369