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 5905-01-170-9079
NSN 5996-01-257-8179
NSN 6135-00-519-1325
NSN 5975-01-149-8889
NSN 5996-01-303-1930
NSN 5920-01-124-7200
NSN 6620-01-115-2926
NSN 5835-01-584-8538
NSN 5910-01-399-1592
NSN 5835-01-583-8358
NSN 5910-01-650-5018
NSN 5835-01-236-6514