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 6110-01-472-1963
NSN 6320-01-411-6610
NSN 5990-01-168-6797
NSN 6645-00-833-2395
NSN 6145-00-020-6708
NSN 6620-00-877-3266
NSN 5910-01-028-2862
NSN 6610-01-033-1748
NSN 6650-00-398-1821
NSN 5920-00-642-9908
NSN 5835-01-439-0180
NSN 5990-01-331-9438