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 6620-00-846-3287
NSN 5985-01-556-2417
NSN 5910-01-508-4674
NSN 5895-00-301-2980
NSN 5910-00-686-9176
NSN 6645-01-314-9236
NSN 5998-01-587-5517
NSN 6135-00-455-2425
NSN 6645-01-297-3368
NSN 5835-00-407-6820
NSN 6620-00-399-0087
NSN 4140-00-846-4786