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 6645-01-425-1673
NSN 5990-01-480-9938
NSN 4140-01-347-4891
NSN 6150-01-219-9835
NSN 5945-01-444-4293
NSN 6610-01-025-2876
NSN 5998-00-253-4410
NSN 5895-00-148-2977
NSN 5935-01-272-4348
NSN 6320-01-562-1599
NSN 5990-01-570-5471
NSN 6650-01-261-5239