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 6135-01-478-4657
NSN 5996-01-076-7374
NSN 5985-00-725-1554
NSN 5999-00-156-4424
NSN 5925-01-386-6188
NSN 5945-00-246-5740
NSN 5985-00-543-0287
NSN 5895-01-319-9151
NSN 4140-00-415-6513
NSN 5996-00-275-1651
NSN 6650-00-185-8344
NSN 5905-00-099-9995