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 6685-01-485-0389
NSN 6650-01-519-1867
NSN 5990-01-279-8654
NSN 5965-01-195-2168
NSN 6620-01-521-6649
NSN 6650-00-494-1000
NSN 5925-01-568-0393
NSN 5905-00-543-2144
NSN 5996-01-519-3843
NSN 5996-01-654-7645
NSN 6145-01-451-4599
NSN 5960-01-101-9029