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 5925-00-226-1155
NSN 5950-01-085-1087
NSN 5835-01-378-6804
NSN 5945-01-227-5647
NSN 5910-01-141-2715
NSN 5960-01-304-0416
NSN 5990-01-159-5988
NSN 6650-01-283-6238
NSN 5935-00-966-1919
NSN 5996-00-466-7857
NSN 6135-01-579-3534
NSN 5975-00-753-6864