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 5950-00-171-1465
NSN 6105-01-415-7579
NSN 5998-01-212-1974
NSN 5985-01-407-4528
NSN 5960-01-082-4491
NSN 5999-01-568-2148
NSN 5990-01-322-9781
NSN 5925-01-244-8950
NSN 5960-01-551-7034
NSN 5905-00-543-2144
NSN 5930-01-564-8540
NSN 5996-00-366-0233