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 5990-00-759-3423
NSN 5945-01-194-8594
NSN 5925-01-295-2361
NSN 5920-00-853-4893
NSN 5960-01-593-4760
NSN 6135-01-420-5907
NSN 6150-01-516-4717
NSN 6645-01-272-6987
NSN 6110-01-170-1298
NSN 5895-01-422-0411
NSN 6150-00-840-9424
NSN 6220-00-754-3452