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 5999-01-417-0841
NSN 6110-01-198-3632
NSN 5855-01-122-9418
NSN 5835-01-424-0054
NSN 6645-01-632-9074
NSN 6105-01-441-2255
NSN 4140-00-279-3148
NSN 6685-00-517-7132
NSN 5990-01-360-0711
NSN 5960-01-024-7918
NSN 6620-01-525-8115
NSN 6645-01-392-4788