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 5990-01-357-6175
NSN 5915-01-447-2589
NSN 5965-01-263-5947
NSN 5930-01-344-7222
NSN 6645-00-958-5299
NSN 5835-01-063-6284
NSN 5998-00-702-8763
NSN 4140-01-441-0691
NSN 6130-01-286-2376
NSN 6220-01-467-9608
NSN 7035-01-587-8820
NSN 5935-01-444-3756