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 5999-01-551-1371
NSN 5920-01-025-5863
NSN 5930-01-485-2274
NSN 5935-00-668-7903
NSN 5895-01-041-3128
NSN 5960-00-110-3285
NSN 5990-00-492-5063
NSN 5975-01-563-5999
NSN 5905-00-490-0464
NSN 6645-01-434-5674
NSN 5960-01-458-0774
NSN 6650-01-083-3707