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 5965-01-444-1322
NSN 5998-00-404-2549
NSN 4140-00-398-9986
NSN 5998-00-856-3329
NSN 5945-01-501-5487
NSN 5835-01-610-5744
NSN 6645-00-287-9192
NSN 5910-00-699-0069
NSN 5990-00-067-6791
NSN 2925-00-881-3770
NSN 5999-01-661-0227
NSN 6685-00-548-5460