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 5920-01-305-3053
NSN 6620-01-406-3584
NSN 5999-01-624-2249
NSN 5925-01-442-8589
NSN 5990-01-609-4793
NSN 5895-00-331-8199
NSN 6645-00-913-2723
NSN 5935-00-172-5870
NSN 5999-01-204-9241
NSN 4140-00-232-9859
NSN 5925-00-167-1213
NSN 2925-00-120-9302