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 5930-01-596-0467
NSN 6650-00-197-7563
NSN 6650-00-233-0705
NSN 6240-00-607-4303
NSN 5990-01-587-8562
NSN 5999-00-468-7992
NSN 5998-01-319-9826
NSN 5985-00-661-2263
NSN 5895-01-202-3797
NSN 5910-01-416-9444
NSN 5855-01-547-2537
NSN 5925-01-602-5767