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 5905-01-320-6930
NSN 5855-01-208-1471
NSN 5999-01-473-7782
NSN 6220-01-652-7997
NSN 6220-01-579-0349
NSN 6610-01-168-7943
NSN 6650-00-617-9896
NSN 6110-01-058-5321
NSN 5905-00-374-8492
NSN 5975-01-401-5355
NSN 5945-01-441-1861
NSN 5985-01-084-4520