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 6650-01-057-6468
NSN 6610-01-533-1873
NSN 6130-01-280-5113
NSN 6685-01-155-4808
NSN 6130-01-333-1625
NSN 5930-01-262-3018
NSN 5930-01-212-9907
NSN 5920-01-480-7007
NSN 6685-01-437-8880
NSN 6650-00-796-4176
NSN 6145-01-486-7959
NSN 6620-01-438-0415