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 6650-01-133-7806
NSN 5998-01-560-1707
NSN 5945-01-211-5065
NSN 5960-00-257-4203
NSN 5855-00-252-5743
NSN 6650-00-525-3446
NSN 5895-01-413-8297
NSN 4140-01-303-2458
NSN 5975-00-393-1269
NSN 5998-01-116-9961
NSN 6150-01-342-4538
NSN 5905-01-421-6807